test_io.rb: fix test error
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41254 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_io.rb: fix test error
remove the temporary file while EACCES occurs because of syncing in
the system probably. rescue ENOSPC from IO#tell. [ruby-core:55457]
[Bug #8519]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41254 b2dd03c8-39d4-4d8f-98ff-823fe69b080e