GLK: AGT: Fix Missing Default Switch Cases

These are flagged by GCC if -Wswitch-default is enabled.

engines/glk/agt/debugcmd.cpp

@@ -182,6 +182,8 @@ static void var_edit(int vtype)
 		case 2:
 			writeln("Flags ( f=false [OFF]  and t=true [ON] )");
 			break;
+		default:
+			break;
 		}
 		writeln("");
 		for (i = 0; i <= imax; i++) {
@@ -195,6 +197,8 @@ static void var_edit(int vtype)
 			case 2:
 				sprintf(sbuff, "%3d%c", i, flag[i] ? 't' : 'f');
 				break;
+			default:
+				break;
 			}
 			writetbl(sbuff, (vtype == 2) ? 5 : 20);
 		}
@@ -211,6 +215,8 @@ static void var_edit(int vtype)
 			case 2:
 				writestr("Flag to toggle");
 				break;
+			default:
+				break;
 			}
 			writestr(" (-1 to quit): ");
 			i = read_number();
@@ -301,6 +307,8 @@ static void writegender(const char *gendername, uchar genderval) {
 	case 0:
 		writestr("Thing");
 		break;
+	default:
+		break;
 	}
 	next_col();
 }

engines/glk/agt/exec.cpp

@@ -106,6 +106,8 @@ void set_statline() {
 	case 5:
 		sprintf(r_stat, "Score: %ld", tscore);
 		break;
+	default:
+		break;
 	}
 }
 
@@ -204,6 +206,7 @@ static word it_pronoun(int item, rbool ind_form)
 	if (tcreat(item))
 		switch (creature[item - first_creat].gender) {
 		case 0:
+		default:
 			return ext_code[wit];
 		case 1:
 			return (ind_form ? ext_code[wher] : ext_code[wshe]);
@@ -484,6 +487,7 @@ static char *wordvar_match(const char **pvarname, char match_type,
 		/* Now need to fix capitalization */
 		switch (capstate(start)) {
 		case 0:
+		default:
 			break; /* $word$ */
 		case 1:  /* $WORD$ */
 			for (i = 0; fill_buff[i] != '\0'; i++)
@@ -1243,6 +1247,8 @@ static void set_pronoun(int item) {
 	case 2:
 		last_he = item;
 		break;
+	default:
+		break;
 	}
 }
 

engines/glk/agt/metacommand.cpp

@@ -1038,6 +1038,7 @@ int scan_metacommand(integer m_actor, int vcode,
 			/* We are doing disambiguation and reached
 			   an action token */
 			case 0:
+			default:
 				break; /* Go onto next metacommand */
 			case 1:
 				rfree(substack);

engines/glk/agt/token.cpp

@@ -598,6 +598,9 @@ static void obj_act(int op_, int obj) {
 	case 3: /* lock and unlock */
 		if (tnoun(obj))
 			noun[obj - first_noun].locked = (op_ == 2);
+		break;
+	default:
+		break;
 	}
 }