Merge pull request #1518 from fredemmott/stopping-on-delay-stop

ui: Emit STREAMING_STOPPING when stop queued

UI/window-basic-main.cpp

@@ -4931,6 +4931,9 @@ void OBSBasic::StreamDelayStopping(int sec)
 	ui->streamButton->setMenu(startStreamMenu);
 
 	ui->statusbar->StreamDelayStopping(sec);
+
+	if (api)
+		api->on_event(OBS_FRONTEND_EVENT_STREAMING_STOPPING);
 }
 
 void OBSBasic::StreamingStart()