Fix possible NULL derefence.

11 years ago · aa2e6a8d29
parent db9d6b9f3d
commit aa2e6a8d29
1 changed files with 1 additions and 1 deletions
--- a/src/websockets.c
+++ b/src/websockets.c
@ -243,7 +243,7 @@ static int callback_mqtt(struct libwebsocket_context *context,
 			break;

 		case LWS_CALLBACK_RECEIVE:
-			if(!u){
+			if(!u || !u->mosq){
 				return -1;
 			}
 			mosq = u->mosq;