qhighdpiscaling_p.h using deprecated APIs

qhighdpiscaling_p.h is only a private header, but in case you want to fix it:

the implementation of QHighDpiScaling::fromNativeLocalRegion is using QRegion::rects, what is a deprecated method. When compiling code, that includes qhighdpiscaling_p.h with having deprecations as warnings you run into warnings.

Looks like the code has not yet been updated to make use of the more efficient QRegion::const_iterator implementation.