avoid -Wuseless-cast GCC warnings in Qt mocs

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example:

/home/runner/work/cppcheck/cppcheck/cmake.output.tinyxml2/gui/test/resultstree/__/__/moc_threadhandler.cpp: In static member function ‘static void ThreadHandler::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)’:
/home/runner/work/cppcheck/cppcheck/cmake.output.tinyxml2/gui/test/resultstree/__/__/moc_threadhandler.cpp:100:51: error: useless cast to type ‘using _t = void (class ThreadHandler::*)()’ {aka ‘void (class ThreadHandler::*)()’} [-Werror=useless-cast]
  100 |             if (*reinterpret_cast<_t *>(_a[1]) == static_cast<_t>(&ThreadHandler::done)) {
      |                                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud