merge revision(s) 50404,50405: [Backport #10975]
* ext/socket/ipsocket.c (init_inetsock_internal): preserve errno before other library calls and use rb_syserr_fail. [ruby-core:68531] [Bug #10975]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@50626 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 50404,50405: [Backport #10975]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@50626 b2dd03c8-39d4-4d8f-98ff-823fe69b080e