clean: reduce implicit int
-> (q)sizetype
conversion warnings
#2127
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Seems to be a legacy of Qt4, where size type is
int
.https://doc.qt.io/archives/qt-4.8/qvector.html#size
And also pre C++11 size_type was unsigned (?).
Only warnings in function body is changed (use
auto
as much as possible) in this PR. There are a few in function return & calling positions.