D7107: Move QMenu allocation from heap to stack

[Denis Kurz]

dkurz added a comment.


  We save one heap allocation. Stack allocations are always cheaper. Also, we reduce the risk of a memory leak, when for some reason the "delete menu" isn't reached.

REPOSITORY
  R206 KMail

REVISION DETAIL
  https://phabricator.kde.org/D7107

To: dkurz, #kde_pim_kmail
Cc: mlaurent, #kde_pim, dvasin, winterz, vkrause, knauss, dvratil
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