fix ubuntu build, suppress spammy warning there

.github/workflows/build.yml

@@ -75,7 +75,7 @@ jobs:
 
     - name: Build
       run: |
-        make -j 4 DOWNLOAD_GAMEPACKS=no CXXFLAGS="-Wno-deprecated-declarations"
+        make -j 4 DOWNLOAD_GAMEPACKS=no CXXFLAGS="-Wno-deprecated-copy"
         wget https://www.dropbox.com/s/b1xpajzfa6yjlzf/netradiant-custom-extra-gamepacks.zip
         unzip -o netradiant-custom-extra-gamepacks.zip -d "install"
 

radiant/mainframe.cpp

@@ -65,6 +65,7 @@
 #include "signal/isignal.h"
 #include "os/path.h"
 #include "os/file.h"
+#include <glib.h>
 #include "eclasslib.h"
 #include "moduleobservers.h"
 

radiant/map.cpp

@@ -922,7 +922,7 @@ void DoMapInfo(){
 		{
 			auto item = new QTreeWidgetItem( tree );
 			item->setData( 0, Qt::ItemDataRole::DisplayRole, name.c_str() );
-			item->setData( 1, Qt::ItemDataRole::DisplayRole, count );
+			item->setData( 1, Qt::ItemDataRole::DisplayRole, int( count ) );
 		}
 	}