MT#55283 allow "closed" callbacks during shutdown

Change-Id: I55cd49e808bdaa2b15f54c09b8a8b954c8262798

daemon/tcp_listener.c

@@ -58,7 +58,8 @@ static void tcp_listener_incoming(int fd, void *p) {
 }
 
 static void tcp_listener_closed(int fd, void *p) {
-	abort();
+	if (!rtpe_shutdown)
+		abort();
 }
 
 static void __tlc_free(void *p) {

daemon/udp_listener.c

@@ -24,7 +24,8 @@ struct udp_listener_callback {
 };
 
 static void udp_listener_closed(int fd, void *p) {
-	abort();
+	if (!rtpe_shutdown)
+		abort();
 }
 
 static void udp_listener_incoming(int fd, void *p) {