Publish last message's value

qjs_wrapper.c

@@ -149,12 +149,7 @@ UA_String get_message(void)
     struct messageNode *current;
 
     current = messageQueue.head;
-    if (current == NULL) {
-        if (!UA_String_isEmpty(&currentMessage)) {
-            UA_String_clear(&currentMessage);
-            currentMessage = UA_STRING("");
-        }
-    } else {
+    if (current != NULL) {
         clear_message(currentMessage);
         currentMessage = UA_STRING_ALLOC(current->message);
         messageQueue.head = current->next == NULL ? (messageQueue.tail = NULL) : current->next;
@@ -377,6 +372,7 @@ static JSValue js_init_pubsub(JSContext *ctx, JSValueConst thisVal,
     if (JS_ToUint32(ctx, &nbDrone, argv[0]))
         return JS_EXCEPTION;
 
+    currentMessage = UA_STRING("");
     droneObjectIdList = (JSValue *) malloc(nbDrone * sizeof(JSValueConst));
     return JS_NewInt32(ctx, 0);
 }