io.c: initialize variable
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51638 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
io.c: initialize variable
[Bug #11444]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51638 b2dd03c8-39d4-4d8f-98ff-823fe69b080e