[PATCH v2] submodule: prevent warning in summary output

["brian m. carlson" <sandals@crustytoothpaste.net>]

When git submodule summary is run and there is a deleted submodule, there is an
warning from git rev-parse:

  fatal: Not a git repository: '.vim/pathogen/.git'

Silence this warning, since it is fully expected that a deleted submodule will
not be a git repository.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---

I hesitated to add the test for $status because it will end up having no effect
since we exclude that case later.  However, for correctness, I included it.

 git-submodule.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/git-submodule.sh b/git-submodule.sh
index 2979197..eec3135 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -1070,7 +1070,10 @@ cmd_summary() {
 		missing_src=
 		missing_dst=
 
+		test $status = D && missing_src=t
+
 		test $mod_src = 160000 &&
+		test -e "$name/.git" &&
 		! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 		missing_src=t
 
-- 
1.8.4.rc3