Merge pull request #10514 from alalek:build_warnings
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Fri, 5 Jan 2018 20:54:01 +0000 (20:54 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Fri, 5 Jan 2018 20:54:01 +0000 (20:54 +0000)

Trivial merge