Merge pull request #10185 from alalek:fix_build_xcode_9.1
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Tue, 28 Nov 2017 18:42:17 +0000 (18:42 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Tue, 28 Nov 2017 18:42:18 +0000 (18:42 +0000)

Trivial merge