Implemented NtSignalAndWaitForSingleObject.

diff --git a/server/queue.c b/server/queue.c
index e801fb0..c2fb9a9 100644
--- a/server/queue.c
+++ b/server/queue.c
@@ -146,6 +146,7 @@
     msg_queue_remove_queue,    /* remove_queue */
     msg_queue_signaled,        /* signaled */
     msg_queue_satisfied,       /* satisfied */
+    no_signal,                 /* signal */
     no_get_fd,                 /* get_fd */
     msg_queue_destroy          /* destroy */
 };
@@ -159,6 +160,7 @@
     NULL,                         /* remove_queue */
     NULL,                         /* signaled */
     NULL,                         /* satisfied */
+    no_signal,                    /* signal */
     no_get_fd,                    /* get_fd */
     thread_input_destroy          /* destroy */
 };