merge revision(s) r46344: [Backport #9902]

	* re.c (match_aref): should not ignore name after NUL byte.
	  [ruby-dev:48275] [Bug #9902]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46869 b2dd03c8-39d4-4d8f-98ff-823fe69b080e