[PATCH 1/6] server: Do not signal read/write bits if there are read/write asyncs waiting.

[Zebediah Figura]

This is validated by tests introduced in
59beffb46c813a3de2eae6f28e3f7f321f666e89 etc. This commit alone doesn't fix said
tests, because:

* on this poll, we will alert the waiting async;

* when reselecting, we will still request POLLIN, because the AFD_POLL_READ
  request is still active,

* when POLLIN is subsequently signaled, we do not remove it in
  sock_dispatch_asyncs(), because we check async_waiting(), not async_queued().

Signed-off-by: Zebediah Figura 
---
 server/sock.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/server/sock.c b/server/sock.c
index 29dd1ca7fa8..db0df5ecf79 100644
--- a/server/sock.c
+++ b/server/sock.c
@@ -1179,10 +1179,9 @@ static void sock_poll_event( struct fd *fd, int event )
         break;
     }

-    complete_async_polls( sock, event, error );
-
     event = sock_dispatch_asyncs( sock, event, error );
     sock_dispatch_events( sock, prevstate, event, error );
+    complete_async_polls( sock, event, error );

sock_reselect( sock );
 }