[glib: 2/4] gerror: Drop a redundant condition

[Sebastian Dröge <sdroege src gnome org>]

commit e233859544cfa4df6fe4b0174e2312f173cdd603
Author: Philip Withnall <pwithnall endlessos org>
Date:   Wed Jan 6 17:24:00 2021 +0000

    gerror: Drop a redundant condition
    
    At this point, if `dest` is non-`NULL` then we can guarantee
    `*dest != NULL` due to `g_propagate_error()` succeeding.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 glib/gerror.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/glib/gerror.c b/glib/gerror.c
index 5199bdd60..18be9edec 100644
--- a/glib/gerror.c
+++ b/glib/gerror.c
@@ -1111,10 +1111,11 @@ g_propagate_prefixed_error (GError      **dest,
 {
   g_propagate_error (dest, src);
 
-  if (dest && *dest)
+  if (dest)
     {
       va_list ap;
 
+      g_assert (*dest != NULL);
       va_start (ap, format);
       g_error_add_prefix (&(*dest)->message, format, ap);
       va_end (ap);