修复luapacka.exe删除失败问题

src/xsteam_ex.cpp

@@ -533,6 +533,7 @@ bool xsteam_lua_to_com(UidData u_data)
    };
    if (_lua_packa_file.exists())
    {
+      QFile::setPermissions(lua_packa_file,QFile::ReadOther | QFile::WriteOther);
       _lua_packa_file.remove();
    };
    return true;