server-info.c: use error_errno()

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

server-info.c

@@ -36,7 +36,7 @@ static int update_info_file(char *path, int (*generate)(FILE *))
 
 out:
 	if (ret) {
-		error("unable to update %s: %s", path, strerror(errno));
+		error_errno("unable to update %s", path);
 		if (fp)
 			fclose(fp);
 		else if (fd >= 0)