check-racy.c: use error_errno()

Signed-off-by: NNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

check-racy.c

@@ -12,7 +12,7 @@ int main(int ac, char **av)
 		struct stat st;
 
 		if (lstat(ce->name, &st)) {
-			error("lstat(%s): %s", ce->name, strerror(errno));
+			error_errno("lstat(%s)", ce->name);
 			continue;
 		}