[runtimes][NFC] Remove stray whitespace on extern C comments

libcxx/include/wchar.h

@@ -186,7 +186,7 @@ size_t mbsnrtowcs(wchar_t *__restrict __dst, const char **__restrict __src,
                   size_t __nmc, size_t __len, mbstate_t *__restrict __ps);
 size_t wcsnrtombs(char *__restrict __dst, const wchar_t **__restrict __src,
                   size_t __nwc, size_t __len, mbstate_t *__restrict __ps);
-}  // extern "C"
+} // extern "C"
 #endif  // __cplusplus && (_LIBCPP_MSVCRT || __MVS__)
 
 #endif // _LIBCPP_WCHAR_H

libcxxabi/src/aix_state_tab_eh.inc

@@ -740,6 +740,6 @@ __catchThrownException(void (*cdfunc)(void),   // function which may fail
   return 0;
 }
 
-}  // extern "C"
+} // extern "C"
 
 }  // __cxxabiv1

libcxxabi/src/cxa_exception.cpp

@@ -771,6 +771,6 @@ __cxa_uncaught_exceptions() throw()
     return globals->uncaughtExceptions;
 }
 
-}  // extern "C"
+} // extern "C"
 
 }  // abi

libcxxabi/src/cxa_guard.cpp

@@ -48,6 +48,6 @@ _LIBCXXABI_FUNC_VIS void __cxa_guard_abort(guard_type *raw_guard_object) {
   SelectedImplementation imp(raw_guard_object);
   imp.cxa_guard_abort();
 }
-}  // extern "C"
+} // extern "C"
 
 }  // __cxxabiv1

libcxxabi/src/cxa_noexception.cpp

@@ -49,7 +49,7 @@ __cxa_uncaught_exception() throw() { return false; }
 unsigned int
 __cxa_uncaught_exceptions() throw() { return 0; }
 
-}  // extern "C"
+} // extern "C"
 
 // provide dummy implementations for the 'no exceptions' case.
 uint64_t __getExceptionClass  (const _Unwind_Exception*)           { return 0; }

libcxxabi/src/cxa_personality.cpp

@@ -1304,7 +1304,7 @@ _LIBCXXABI_FUNC_VIS _Unwind_Reason_Code __xlcxx_personality_v1(
     __attribute__((__alias__("__gxx_personality_v0")));
 #endif
 
-}  // extern "C"
+} // extern "C"
 
 }  // __cxxabiv1
 

libcxxabi/src/cxa_vector.cpp

@@ -416,6 +416,6 @@ __cxa_vec_delete3(void *array_address, size_t element_size, size_t padding_size,
 }
 
 
-}  // extern "C"
+} // extern "C"
 
 }  // abi