D26588: Simplify usage of QMimeDatabase.

[Aleix Pol Gonzalez]

apol accepted this revision.

REPOSITORY
  R241 KIO

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D26588

To: dfaure, chinmoyr, ngraham, apol
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns