From 4b85e88174eea7a79d9c68210d716dc3e4c4f0eb Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 4 Dec 2018 02:24:15 +0000
Subject: Prefer rb_check_arity when 0 or 1 arguments

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66179 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 re.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 're.c')

diff --git a/re.c b/re.c
index 84027707e0..1218877684 100644
--- a/re.c
+++ b/re.c
@@ -3960,13 +3960,11 @@ match_setter(VALUE val)
 static VALUE
 rb_reg_s_last_match(int argc, VALUE *argv)
 {
-    VALUE nth;
-
-    if (argc > 0 && rb_scan_args(argc, argv, "01", &nth) == 1) {
+    if (rb_check_arity(argc, 0, 1) == 1) {
         VALUE match = rb_backref_get();
         int n;
         if (NIL_P(match)) return Qnil;
-        n = match_backref_number(match, nth);
+        n = match_backref_number(match, argv[0]);
 	return rb_reg_nth_match(n, match);
     }
     return match_getter();
-- 
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