merge revision(s) 59893,59922: [Backport #13895]
fix the case High Sierra's mincore(2) may return -128 [Bug #13895] Fix typos [ci skip]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 59893,59922: [Backport #13895]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e