merge revision(s) 40216: [Backport #8266]
* ext/fiddle/closure.c (initialize): check mprotect's return value. If mprotect is failed because of PaX or something, its function call will cause SEGV. http://c5664.rubyci.org/~chkbuild/ruby-trunk/log/20130401T210301Z.diff.html.gz
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40290 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 40216: [Backport #8266]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40290 b2dd03c8-39d4-4d8f-98ff-823fe69b080e