D12592: KFileWidget: Prevent places panel width from growing 1px iteratively

[Henrik Fehlauer]

rkflx added a dependent revision: D12594: KFileWidget: Perfectly align filename 
widget with icon view.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D12592

To: rkflx, #frameworks
Cc: michaelh, bruns