Fix loman breakage.

Pass cwd into FindRepoDir().

BUG=None
TEST=None

Change-Id: Ib0e68e93a24bbdd57bd2090be112f629673bca6a
Reviewed-on: https://gerrit.chromium.org/gerrit/40934
Reviewed-by: Brian Harring <ferringb@chromium.org>
Tested-by: Brian Harring <ferringb@chromium.org>
2 files changed