Merge branch 'jc/no-grepping-for-strerror-in-tests'

* jc/no-grepping-for-strerror-in-tests:
  t1404: do not rely on the exact phrasing of strerror()

t/t1404-update-ref-errors.sh

@@ -614,7 +614,7 @@ test_expect_success 'delete fails cleanly if packed-refs file is locked' '
 	test_when_finished "rm -f .git/packed-refs.lock" &&
 	test_must_fail git update-ref -d $prefix/foo >out 2>err &&
 	git for-each-ref $prefix >actual &&
-	test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: File exists" err &&
+	test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: " err &&
 	test_cmp unchanged actual
 '