Windows screen driver fixes: (dm)    Make the currentvt() method more efficient.    Remove a cause of memory corruption (free of supplied buffer) from the read() method.    Remove an out-of-range address reference from the read() method.
Windows screen driver fixes: (dm)
   Make the currentvt() method more efficient.
   Remove a cause of memory corruption (free of supplied buffer) from the read() method.
   Remove an out-of-range address reference from the read() method.


git-svn-id: 30a5f035a20f1bc647618dbad7eea2a951b61b7c@1898 91a5dbb7-01b9-0310-9b5f-b28072856b6e

brltty/brltty,brltty/brltty,brltty/brltty,brltty/brltty,brltty/brltty,brltty/brltty