send-email: don't call methods on undefined values

diff --git a/t/t6101-rev-parse-parents.sh b/t/t6101-rev-parse-parents.sh
index 919552a2fc5544c130268befca322a6e6a8081c3..e673c25e943f77430d7f61b0ab9e0b21e38e6915 100755 (executable)
--- a/t/t6101-rev-parse-parents.sh
+++ b/t/t6101-rev-parse-parents.sh
@@ -6,7 +6,7 @@
 test_description='Test git rev-parse with different parent options'
 
 . ./test-lib.sh
-. ../t6000lib.sh # t6xxx specific functions
+. "$TEST_DIRECTORY"/lib-t6000.sh # t6xxx specific functions
 
 date >path0
 git update-index --add path0