Merge branch 'md/t1403-path-is-file'

Test tweak.

* md/t1403-path-is-file:
  t1403: verify that path exists and is a file

t/t1403-show-ref.sh

@@ -196,7 +196,7 @@ test_expect_success 'show-ref --verify with dangling ref' '
 
 	remove_object() {
 		file=$(sha1_file "$*") &&
-		test -e "$file" &&
+		test_path_is_file "$file" &&
 		rm -f "$file"
 	} &&