Merge pull request #13599 from dkurt:dnn_conv_error_msg
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Wed, 9 Jan 2019 14:02:14 +0000 (14:02 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Wed, 9 Jan 2019 14:02:14 +0000 (14:02 +0000)

Trivial merge