safeguard

callback_dispatcher.cc

@@ -30,10 +30,12 @@ namespace pEp {
 
         targets.push_back({messageToSend, notifyHandshake, on_startup, shutdown});
 
+        if (!Adapter::on_sync_thread()) {
             // try_unlock() possibly waiting messageToSend
             sync_mtx.try_lock();
             sync_mtx.unlock();
         }
+    }
 
     void CallbackDispatcher::remove(::messageToSend_t messageToSend)
     {