Portability fix

include/my_pthread.h

@@ -146,6 +146,7 @@ int pthread_mutex_destroy (pthread_mutex_t *);
 #define pthread_mutex_destroy(A) DeleteCriticalSection(A)
 #define my_pthread_setprio(A,B)  SetThreadPriority(GetCurrentThread(), (B))
 #define pthread_kill(A,B) pthread_dummy(0)
+#define pthread_exit(A) pthread_dummy()
 #endif /* OS2 */
 
 /* Dummy defines for easier code */

sql/mysqld.cc

@@ -634,9 +634,7 @@ static void __cdecl kill_server(int sig_ptr)
     unireg_abort(1);				/* purecov: inspected */
   else
     unireg_end(0);
-#ifndef OS2
   pthread_exit(0);				/* purecov: deadcode */
-#endif
   RETURN_FROM_KILL_SERVER;
 }
 
@@ -668,9 +666,7 @@ static sig_handler print_signal_warning(int sig)
 void unireg_end(int signal_number __attribute__((unused)))
 {
   clean_up();
-#ifndef OS2
   pthread_exit(0);				// Exit is in main thread
-#endif
 }