Ruby

random.c: use rb_check_to_int

• random.c (rand_range, rand_random): use rb_check_to_int instead
  of rb_check_to_integer with the same conversion method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54930 b2dd03c8-39d4-4d8f-98ff-823fe69b080e