Ruby » Ruby master

re.c: match? should return nil if no match

• re.c (rb_reg_match_m_p): should return nil if no match, as the
  document says. [Feature #8110]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55067 b2dd03c8-39d4-4d8f-98ff-823fe69b080e