merge revision(s) 44334: [Backport #9283]

	* test/rubygems/test_gem_ext_builder.rb:  Fix warning due to ambiguous
	  expression.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@44365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e