msg_hash: fix orphan _msg references after _pair conversion

Commit 9ddd17a's conversion script rewrote _msg references that
appeared BETWEEN the declaration and the runloop_msg_queue_push
call, but missed _msg references AFTER the push.  In RetroArch
the LOG-after-push idiom is common — the message is queued for
the OSD then RARCH_LOG/WARN/ERR logs it to the console too — so
several converted blocks ended up with the declaration renamed
to _p but the trailing log line still referencing _msg, which
no longer exists.

Build failure observed by the maintainer:

  retroarch.c:3648:41: error: '_msg' undeclared (first use in
        this function)
   3648 |             RARCH_ERR("[Replay] %s.\n", _msg);

Sweep every block where 'msg_hash_str_pair_t _p' was introduced
and rewrite every remaining whole-word _msg reference inside that
block's scope (until the matching closing brace at lower indent,
or the next _p / _msg declaration which would introduce a new
scope) to _p.s.

10 sites fixed across 3 files:
  retroarch.c          2  (CMD_EVENT_LOAD_MOVIE_FILE,
                           CMD_EVENT_RECORD_TOGGLE error paths)
  runahead.c           6  (six warning logs after pushes)
  tasks/task_movie.c   2  (bsv_movie_start_record error,
                           bsv_movie_start_playback log)

All other converted files were already clean — they had no
log-after-push uses of _msg.

Behavior is byte-identical: same string formatted into the same
log call, just sourced from _p.s (which is byte-equal to what
msg_hash_to_str(msg) would return) instead of _msg.

retroarch.c

@@ -3645,7 +3645,7 @@ bool command_event(enum event_command cmd, void *data)
                msg_hash_to_str_pair(MSG_FAILED_TO_LOAD_MOVIE_FILE);
             runloop_msg_queue_push(_p.s, _p.len, 1, 180, true, NULL,
                   MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-            RARCH_ERR("[Replay] %s.\n", _msg);
+            RARCH_ERR("[Replay] %s.\n", _p.s);
          }
          return res;
 #else
@@ -3677,7 +3677,7 @@ bool command_event(enum event_command cmd, void *data)
             msg_hash_str_pair_t _p = msg_hash_to_str_pair(MSG_FAILED_TO_START_MOVIE_RECORD);
             runloop_msg_queue_push(_p.s, _p.len, 1, 180, true, NULL,
                   MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-            RARCH_ERR("[Replay] %s.\n", _msg);
+            RARCH_ERR("[Replay] %s.\n", _p.s);
          }
          return res;
 #else

runahead.c

@@ -1249,7 +1249,7 @@ void runahead_run(void *data,
          if (!runahead_hide_warnings)
             runloop_msg_queue_push(_p.s, _p.len, 0, 2 * 60, true, NULL,
                   MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-         RARCH_WARN("[Run-Ahead] %s\n", _msg);
+         RARCH_WARN("[Run-Ahead] %s\n", _p.s);
          goto force_input_dirty;
       }
    }
@@ -1301,7 +1301,7 @@ void runahead_run(void *data,
                   msg_hash_to_str_pair(MSG_RUNAHEAD_FAILED_TO_SAVE_STATE);
                runloop_msg_queue_push(_p.s, _p.len, 0, 3 * 60, true, NULL,
                      MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-               RARCH_WARN("[Run-Ahead] %s\n", _msg);
+               RARCH_WARN("[Run-Ahead] %s\n", _p.s);
                return;
             }
          }
@@ -1313,7 +1313,7 @@ void runahead_run(void *data,
                msg_hash_str_pair_t _p = msg_hash_to_str_pair(MSG_RUNAHEAD_FAILED_TO_LOAD_STATE);
                runloop_msg_queue_push(_p.s, _p.len, 0, 3 * 60, true, NULL,
                      MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-               RARCH_WARN("[Run-Ahead] %s\n", _msg);
+               RARCH_WARN("[Run-Ahead] %s\n", _p.s);
                return;
             }
          }
@@ -1330,7 +1330,7 @@ void runahead_run(void *data,
          runloop_st->flags &= ~RUNLOOP_FLAG_RUNAHEAD_SECONDARY_CORE_AVAILABLE;
          runloop_msg_queue_push(_p.s, _p.len, 0, 3 * 60, true, NULL,
                MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-         RARCH_WARN("[Run-Ahead] %s\n", _msg);
+         RARCH_WARN("[Run-Ahead] %s\n", _p.s);
          goto force_input_dirty;
       }
 
@@ -1352,7 +1352,7 @@ void runahead_run(void *data,
             msg_hash_str_pair_t _p = msg_hash_to_str_pair(MSG_RUNAHEAD_FAILED_TO_SAVE_STATE);
             runloop_msg_queue_push(_p.s, _p.len, 0, 3 * 60, true, NULL,
                   MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-            RARCH_WARN("[Run-Ahead] %s\n", _msg);
+            RARCH_WARN("[Run-Ahead] %s\n", _p.s);
             return;
          }
 
@@ -1361,7 +1361,7 @@ void runahead_run(void *data,
             msg_hash_str_pair_t _p = msg_hash_to_str_pair(MSG_RUNAHEAD_FAILED_TO_LOAD_STATE);
             runloop_msg_queue_push(_p.s, _p.len, 0, 3 * 60, true, NULL,
                   MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-            RARCH_WARN("[Run-Ahead] %s\n", _msg);
+            RARCH_WARN("[Run-Ahead] %s\n", _p.s);
             return;
          }
 

tasks/task_movie.c

@@ -264,7 +264,7 @@ static bool bsv_movie_start_record(input_driver_state_t * input_st, char *path)
       msg_hash_str_pair_t _p = msg_hash_to_str_pair(MSG_FAILED_TO_START_MOVIE_RECORD);
       runloop_msg_queue_push(_p.s, _p.len, 1, 180, true, NULL,
             MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-      RARCH_ERR("[Replay] %s\n", _msg);
+      RARCH_ERR("[Replay] %s\n", _p.s);
       return false;
    }
 
@@ -406,7 +406,7 @@ bool movie_stop_record(input_driver_state_t *input_st)
       return false;
    runloop_msg_queue_push(_p.s, _p.len, 2, 180, true, NULL,
          MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
-   RARCH_LOG("[Replay] %s\n", _msg);
+   RARCH_LOG("[Replay] %s\n", _p.s);
 #ifdef HAVE_STATESTREAM
 #if DEBUG
    RARCH_DBG("[Replay] superblock histogram\n");