Windows build broken -- again!

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