Merge pull request #17419 from YourButterfly:fix_divide_zero_in_darknet_3_4
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Fri, 29 May 2020 17:32:48 +0000 (17:32 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Fri, 29 May 2020 17:32:48 +0000 (17:32 +0000)

Trivial merge