Fixed an issue where a scrape followed by an aborted re-scrape could crash the application.

es-app/src/guis/GuiMetaDataEd.cpp

@@ -507,6 +507,7 @@ void GuiMetaDataEd::save()
 
 void GuiMetaDataEd::fetch()
 {
+    mMediaFilesUpdated = false;
     GuiGameScraper* scr = new GuiGameScraper(
         mWindow, mScraperParams, std::bind(&GuiMetaDataEd::fetchDone, this, std::placeholders::_1));
     mWindow->pushGui(scr);