MW-416

Changed return code for replicatio error to TRUE.
This is aligned with native mysql convention to return TRUE (defined to 1) or FALSE (defined to 0) from a bool function.
This is wrong, but follows the mysql conventiosn, at least...

sql/events.cc

@@ -420,7 +420,7 @@ Events::create_event(THD *thd, Event_parse_data *parse_data)
   DBUG_RETURN(ret);
 #ifdef WITH_WSREP
  error:
-  DBUG_RETURN(true);
+  DBUG_RETURN(TRUE);
 #endif /* WITH_WSREP */
 }