test_file_exhaustive.rb: fix assertion
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46436 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_file_exhaustive.rb: fix assertion
wrong expected value, considering a prefix (drive letter or UNC)
on DOSISH platforms. [Bug #9934]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46436 b2dd03c8-39d4-4d8f-98ff-823fe69b080e