D25288: Fix build on newish gcc with qreal as float

[Pekka Vuorela]

pvuorela added reviewers: leinir, denexter.

REPOSITORY
  R8 Calligra

REVISION DETAIL
  https://phabricator.kde.org/D25288

To: pvuorela, leinir, denexter
Cc: Calligra-Devel-list, davidllewellynjones, dcaliste, ognarb, cochise, 
vandenoever