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

1 files changed, 2 insertions, 4 deletions

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();