test_variable.rb: fix test

* test/ruby/test_variable.rb (test_binding_local_variables):
  adjust local variables.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44394 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ossl.c: integer overflow

* ext/openssl/ossl.c (string2hex): fix signed integer overflow.
  [ruby-core:51711] [Bug #7744] [Fixes GH-242]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44395 b2dd03c8-39d4-4d8f-98ff-823fe69b080e