Fixed issue with matplotlib.hist.

4 jobs for fix-histogram in 24 minutes and 43 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Build
passed build_linux_27 #140359
docker

00:16:01

85.0%
passed build_linux_36 #140360
docker

00:16:38

85.0%
passed build_macosx_27 #140361
macosx

00:08:05

85.0%
passed build_macosx_36 #140362
macosx

00:06:45

85.0%