server: Don't set the idle event when waiting for a message reply.

dlls/user32/tests/msg.c

@@ -12031,7 +12031,7 @@ static const struct
 /* 0 */  { WAIT_TIMEOUT, WAIT_TIMEOUT, FALSE },
          { WAIT_TIMEOUT, 0,            FALSE },
          { WAIT_TIMEOUT, 0,            FALSE },
-         { WAIT_TIMEOUT, WAIT_TIMEOUT, TRUE  },
+         { WAIT_TIMEOUT, WAIT_TIMEOUT, FALSE },
          { WAIT_TIMEOUT, WAIT_TIMEOUT, FALSE },
 /* 5 */  { WAIT_TIMEOUT, 0,            FALSE },
          { WAIT_TIMEOUT, 0,            FALSE },

server/queue.c

@@ -771,7 +771,7 @@ static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *ent
         set_error( STATUS_ACCESS_DENIED );
         return 0;
     }
-    if (process->idle_event) set_event( process->idle_event );
+    if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
 
     if (queue->fd && list_empty( &obj->wait_queue ))  /* first on the queue */
         set_fd_events( queue->fd, POLLIN );