[ECOS] Patch for io//serial/current/src/common/serial.c

[Dave Airlie]

When compiling without asserts but with block transfers enabled this patch
is required,

It is against the latest ftp snapshot 20 Oct... I'd say CVS hasn't changed
much since..

Dave.

-- 
      David Airlie, Software Engineer, Parthus Technologies plc.,
       Mary Rosse Centre, National Tech Park, Limerick, Ireland.
   t: +353-61-508116 / f: +353-61-508101 / David.Airlie@parthus.com