D29427: [KBookmarkMenu] Assign m_actionCollection early to prevent crash

[Ahmad Samir]

ahmadsamir added a reviewer: nicolasfella.

REPOSITORY
  R294 KBookmarks

REVISION DETAIL
  https://phabricator.kde.org/D29427

To: ahmadsamir, #frameworks, dfaure, kossebau, nicolasfella
Cc: rikmills, kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, bruns