Make gclient_scm_test pass even if no global user name or email is defined.
Make gclient_scm_test pass even if no global user name or email is defined.


R=maruel@chromium.org
BUG=


Review URL: https://chromiumcodereview.appspot.com/12300002

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@183044 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools