Merge pull request #13301 from alalek:build_warnings
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Tue, 27 Nov 2018 13:53:02 +0000 (13:53 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Tue, 27 Nov 2018 13:53:02 +0000 (13:53 +0000)

Trivial merge