EventManager: Fix potential ABBA deadlock if callback contains locks

api/icsneocpp/eventmanager.cpp

@@ -99,8 +99,12 @@ void EventManager::addEventInternal(APIEvent event) {
 }
 
 void EventManager::runCallbacks(APIEvent event) {
+    std::map<int, icsneo::EventCallback> tempCallbacks;
+    {
         std::lock_guard<std::mutex> lk(callbacksMutex);
-	for(auto& i : callbacks)
+        tempCallbacks = callbacks;
+    }
+    for(auto& i : tempCallbacks)
         i.second.callIfMatch(std::make_shared<APIEvent>(event));
 }