merge revision(s) 48900,48902: [Backport #10618]

	test/test_weakref.rb: increase timeout [Bug #10618]

	* test/test_weakref.rb (test_repeated_object_leak): increase timeout
  [Bug #10618]
	* test/test_weakref.rb (test_repeated_object_leak): increase timeout
	  [Bug #10618]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@48949 b2dd03c8-39d4-4d8f-98ff-823fe69b080e