[gnome-remote-desktop] session-rdp: Save wait return value before asserting it

[Jonas Ådahl <jadahl src gnome org>]

commit 716b1af9a742a58eb1575c60141a21209a367503
Author: Pascal Nowack <Pascal Nowack gmx de>
Date:   Sun Apr 24 12:39:13 2022 +0200

    session-rdp: Save wait return value before asserting it
    
    This should make the stacktrace clearer, when the assertion is actually
    hit.

 src/grd-session-rdp.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/src/grd-session-rdp.c b/src/grd-session-rdp.c
index 7464523a..1260216d 100644
--- a/src/grd-session-rdp.c
+++ b/src/grd-session-rdp.c
@@ -2202,8 +2202,12 @@ grd_session_rdp_stop (GrdSession *session)
 
   if (session_rdp->graphics_thread)
     {
+      uint32_t status;
+
       g_assert (session_rdp->graphics_context);
-      g_assert (WaitForSingleObject (session_rdp->stop_event, 0) != WAIT_TIMEOUT);
+
+      status = WaitForSingleObject (session_rdp->stop_event, 0);
+      g_assert (status != WAIT_TIMEOUT);
 
       g_main_context_wakeup (session_rdp->graphics_context);
       g_clear_pointer (&session_rdp->graphics_thread, g_thread_join);