Google Code-in

Send a patch to Dolphin [1] that fixes the warning proposed by Clazy [2].

There's some more information in this blog post I wrote about how to set it up: [4]

[1] https://git.reviewboard.kde.org/dashboard/

[2] https://quickgit.kde.org/?p=clazy.git&a=blob&f=README

[3] https://quickgit.kde.org/?p=dolphin.git

[4] http://www.proli.net/2015/12/06/getting-qt-5-right-in-your-application/