Because some interfaces aren't linkifying the URL when the commit message ends with it.
BUG=480922
TESTED=tests/git_cl_test.py; presubmit ok
Review URL: https://codereview.chromium.org/1165293002
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295566 0039d316-1c4b-4281-b951-d872f2087c98