D17901: "Zero as null pointer constant" warnings fixed

[Christoph Feck]

cfeck accepted this revision.
cfeck added a reviewer: teran.
cfeck added inline comments.
This revision is now accepted and ready to land.

INLINE COMMENTS

> kcalc.cpp:682
> +	int margin = QApplication::style()->pixelMetric(QStyle::PM_ButtonMargin, nullptr, nullptr);
>  	margin = qMax(qMin(margin / 2, 3), 3);
>  

Note to self: Check why margin is limited to 3.

REPOSITORY
  R353 KCalc

BRANCH
  compiler-warnings (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D17901

To: gassaf, cfeck, teran
Cc: cfeck, kde-utils-devel
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