Merge pull request #15451 from mattmyne:calibratecameraRO_fix_emptyJo
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Wed, 4 Sep 2019 16:12:30 +0000 (16:12 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Wed, 4 Sep 2019 16:12:30 +0000 (16:12 +0000)

Trivial merge