enum.c (enum_minmax): simplify return value creation

No need to call three functions on success when one will do.
This results in less LoC and smaller object code, too:

   text    data     bss     dec     hex filename
  33860       0     296   34156    856c gcc/enum.o-before
  33852       0     296   34148    8564 gcc/enum.o

* enum.c (enum_minmax): simplify return value creation
* test/ruby/test_enum.rb: test behavior on empty

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51036 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 4 deletions

diff --git a/enum.c b/enum.c
index 4b1e119848..e14ebfaa2a 100644
--- a/enum.c
+++ b/enum.c
@@ -1715,7 +1715,6 @@ enum_minmax(VALUE obj)
 {
     struct MEMO *memo = MEMO_NEW(Qundef, Qundef, Qundef);
     struct minmax_t *m = (struct minmax_t *)&memo->v1;
-    VALUE ary = rb_ary_new3(2, Qnil, Qnil);
 
     m->min = Qundef;
     m->last = Qundef;
@@ -1730,10 +1729,9 @@ enum_minmax(VALUE obj)
 	    minmax_i_update(m->last, m->last, m);
     }
     if (m->min != Qundef) {
-	rb_ary_store(ary, 0, m->min);
-	rb_ary_store(ary, 1, m->max);
+	return rb_assoc_new(m->min, m->max);
     }
-    return ary;
+    return rb_assoc_new(Qnil, Qnil);
 }
 
 static VALUE