The qmake code to read output from dependency-generation was adding
QByteArray values to a QString, thereby tacitly converting from UTF-8;
this is misguided. Hopefully, the command emits its output in the same
local 8-bit encoding that QString knows to convert from.
Simplified needlessly verbose loops (that violated Qt coding style) in
the process.
Fixes: QTBUG-75904
Change-Id: I27cf81ffcb63ebc999b8e4fc57abdb9a68c4d2b3
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>