tree 5555eabcef21746131a1cfb19267349f0a04c370
parent 5dfbd6f224e0c00870b16a794cc4e413c67cca24
author Anthony Léonard <anthony.leonard@savoirfairelinux.com> 1506537315 -0400
committer Anthony Léonard <anthony.leonard@savoirfairelinux.com> 1506538753 -0400

fix build on Xcode 9

A change in Cocoa framework between Xcode 8 and 9 made the
QNSTreeController not able to compile. This patch uses the correct way
to count child objects in arrangedObject.

Change-Id: I350671df4302a29d69c78a42f46102974e3639ab