Because everyone needs humour.

Fix a small bug in subcommands.py with undocumented commands.

R=stip@chromium.org
BUG=

Review URL: https://codereview.chromium.org/554123003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@291867 0039d316-1c4b-4281-b951-d872f2087c98