win32.c: unlink symlinkd
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51692 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
win32.c: unlink symlinkd
directory but not a file.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51692 b2dd03c8-39d4-4d8f-98ff-823fe69b080e