t / t5100 / info0010on commit tests: use 'test_must_be_empty' instead of '! test -s' (ec10b01)
   1Author: Lukas Sandström
   2Email: lukass@etek.chalmers.se
   3Subject: git-mailinfo: Fix getting the subject from the body
   4Date: Thu, 10 Jul 2008 23:41:33 +0200
   5