merge revision(s) r47288: [Backport #10153]

	* io.c (io_close): ignore only "closed stream" IOError and
	  NoMethodError, do not swallow other exceptions at the end of
	  block.  [ruby-core:64463] [Bug #10153]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47486 b2dd03c8-39d4-4d8f-98ff-823fe69b080e