[PATCH] unset GREP_OPTIONS in test-lib.sh

I used to set GREP_OPTIONS to exclude *.orig and *.rej files. But with this
the test t4252-am-options.sh fails because it calls grep with a .rej file:

    grep "@@ -1,3 +1,3 @@" file-2.rej

Signed-off-by: Bert Wesarg <redacted>

---
 t/test-lib.sh |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index f2ca536..6ac8dc6 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh

@@ -65,6 +65,8 @@ GIT_TEST_CMP=${GIT_TEST_CMP:-diff -u}
 # CDPATH into the environment
 unset CDPATH
 
+unset GREP_OPTIONS
+
 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 	1|2|true)
 		echo "* warning: Some tests will not work if GIT_TRACE" \

-- 
tg: (785c58e..) bw/unset-GREP_OPTIONS (depends on: master)