merge revision(s) 48948: [Backport #10591]

	* lib/net/http/response.rb (Net::HTTPResponse): require one or more
	  spaces [Bug #10591].
	  by leriksen <leif.eriksen.au@gmail.com>
	  https://github.com/ruby/ruby/pull/782 fix GH-782
	  NOTE: graph.facebook.com returns without SP Reason-Phrase.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@48952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e