Windows build broken -- again!

[Simon Peyton Jones]

Aaargh!
My windows build is, once again, broken.   The error is below.  Could whoever broke it please fix it?  Something to do with "blocking_queue_hd" perhaps?
Please.
Thanks
Simon

rts\win32\AsyncIO.c: In function 'awaitRequests':



rts\win32\AsyncIO.c:289:23:

     error: 'blocking_queue_hd' undeclared (first use in this function)



rts\win32\AsyncIO.c:289:23:

     note: each undeclared identifier is reported only once for each function it appears in

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