D11346: Only set iconText() if actually changed

[Christoph Feck]

cfeck added inline comments.

INLINE COMMENTS

> apol wrote in kacceleratormanager.cpp:792
> What happens when iconText.isEmpty()?

Qt returns QAction::text() when QAction::iconText() is empty. Apparently Qt also strips some text, so to check if there was no iconText(), we need this weird check instead of using isEmpty().

REPOSITORY
  R236 KWidgetsAddons

REVISION DETAIL
  https://phabricator.kde.org/D11346

To: cfeck, #frameworks, chehrlic
Cc: apol, chehrlic, michaelh, ngraham
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