fdo#80280 Don't add items with no bitmaps

Change-Id: I625aff5d2dcae0b1491fa77b04605d4579ec8530

cui/source/customize/cfg.cxx

@@ -4887,6 +4887,8 @@ SvxIconSelectorDialog::SvxIconSelectorDialog( vcl::Window *pWindow,
         if ( graphics.getLength() > 0 )
         {
             Image img = Image( graphics[ 0 ] );
+            if ( !img.GetBitmapEx().IsEmpty() )
+            {
                 pTbSymbol->InsertItem( nId, img, pConstIter->first );
 
                 uno::Reference< graphic::XGraphic > xGraphic = graphics[ 0 ];
@@ -4899,6 +4901,7 @@ SvxIconSelectorDialog::SvxIconSelectorDialog( vcl::Window *pWindow,
 
                 ++nId;
             }
+        }
 
         ++pConstIter;
     }