merge revision(s) 44184: [Backport #9247]

	* ext/socket/lib/socket.rb: Don't test $! in "ensure" clause because
	  it may be set before the body.
	  Reported by ko1 and mrkn.  [ruby-core:59088] [Bug #9247]

	* lib/cgi/core.rb: Ditto.

	* lib/drb/ssl.rb: Ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e