CHECK ABORT every message dispatch

skynet-src/skynet_start.c

@@ -125,7 +125,6 @@ _worker(void *p) {
 	skynet_initthread(THREAD_WORKER);
 	struct message_queue * q = NULL;
 	for (;;) {
-		CHECK_ABORT
 		q = skynet_context_message_dispatch(sm, q, weight);
 		if (q == NULL) {
 			if (pthread_mutex_lock(&m->mutex) == 0) {
@@ -140,6 +139,7 @@ _worker(void *p) {
 				}
 			}
 		} 
+		CHECK_ABORT
 	}
 	return NULL;
 }