Merge pull request Aircoookie#1101 from droloff/fix-npe

check payload to avoid npe
bwente · Aug 20, 2020 · a8c530a · a8c530a
2 parents 7dc1240 + 3b4bccd
commit a8c530a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/wled00/mqtt.cpp b/wled00/mqtt.cpp
@@ -56,6 +56,12 @@ void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties
 
   DEBUG_PRINT("MQTT msg: ");
   DEBUG_PRINTLN(topic);
+
+  // paranoia check to avoid npe if no payload
+  if (payload==nullptr) {
+    DEBUG_PRINTLN("no payload -> leave");
+    return;
+  }
   DEBUG_PRINTLN(payload);
 
   //no need to check the topic because we only get topics we are subscribed to