update(HTTP): Execute callback on main thread

Author: skuzzis

src/plugins/core/scripting/http.cpp

@@ -153,9 +153,11 @@ std::string PluginHTTP::PerformHTTPWithRequestID(std::string receivedData, std::
     SteamAPICall_t call;
     g_http->SendHTTPRequest(req, &call);
     new TrackedRequest(req, call, requestID, [](HTTPRequestHandle hndl, int status, std::string body, std::string headers, std::string err, std::string reqID) -> void {
-        PluginEvent* event = new PluginEvent("core", nullptr, nullptr);
-        g_pluginManager->ExecuteEvent("core", "OnHTTPActionPerformed", encoders::msgpack::SerializeToString({ status, body, headers, err, reqID }), event);
-        delete event;
+        g_Plugin.NextFrame([&]() -> void {
+            PluginEvent* event = new PluginEvent("core", nullptr, nullptr);
+            g_pluginManager->ExecuteEvent("core", "OnHTTPActionPerformed", encoders::msgpack::SerializeToString({ status, body, headers, err, reqID }), event);
+            delete event;
+            });
         });
 
     return requestID;