(__gthread_objc_init_thread_system): If pthread_key_create fails, it's not clear…

(__gthread_objc_init_thread_system): If pthread_key_create fails, it's not clear what the return value is.

(__gthread_objc_init_thread_system): If pthread_key_create fails, it's
not clear what the return value is.  This obvious fix makes sure it
always returns -1 if a problem occurs.

From-SVN: r43091

gcc/gthr-posix.h

@@ -129,8 +129,8 @@ __gthread_objc_init_thread_system(void)
             return 0;
         }
     }
-  else
-    return -1;
+
+  return -1;
 }
 
 /* Close the threads subsystem. */