fix Warning

qt6-after/qt6-migrated-legatus/Lts/Common/LtsWidgets/lts_global_wait_dialog.cpp

@@ -119,6 +119,7 @@ void bt()
     }
 
     //qWarning() << "frame" << i << address << function << offset;
+    (void)offset;
   }
 
   free(symbols);