run_command() was using the undefined variable 'cmd', rather than the pass in parameter 'command'. Bug: angleproject:5210 Change-Id: I5e80869b18b717835217ad14a562bb4d223d52c4 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2765005Reviewed-by:Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Tim Van Patten <timvp@google.com>