message: qa: Do not force overwrite of QT_QPA_PLATFORM on windows for gui tests
diff: @@ -61,7 +61,7 @@ int main(int argc, char *argv[])
  // platform ("xcb", "windows", or "cocoa") so tests can't unintentionally
  // interfere with any background GUIs and don't require extra resources.
  #if defined(WIN32)
  - _putenv_s("QT_QPA_PLATFORM", "minimal");
  + if (getenv("QT_QPA_PLATFORM") == nullptr) _putenv_s("QT_QPA_PLATFORM", "minimal");
  #else
  setenv("QT_QPA_PLATFORM", "minimal", /* overwrite */ 0);
  #endif
  