AudioStats.cpp: replace deprecated QPalette::foreground() with QPalette::windowText()
AudioStats.cpp: replace deprecated QPalette::foreground() with QPalette::windowText()

https://github.com/qt/qtbase/commit/4c522e0226da1bcc67a585130e3b2a976be128fd

Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble