thread_pthread: avoid redundant error message on pipe2() fail
Seeing one error for pipe creation is enough.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63949 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
thread_pthread: avoid redundant error message on pipe2() fail
Seeing one error for pipe creation is enough.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63949 b2dd03c8-39d4-4d8f-98ff-823fe69b080e