[PATCH 1/5] wldap32: Avoid crashes in interact_callback() if defaults is NULL.

[Dmitry Timoshkov]

From: Dmitry Timoshkov

ldap_bind_sW() already copes with SEC_WINNT_AUTH_IDENTITY_W being NULL.

Signed-off-by: Dmitry Timoshkov 
---
 dlls/wldap32/bind.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/wldap32/bind.c b/dlls/wldap32/bind.c
index 55422c82474..f150a4f0c02 100644
--- a/dlls/wldap32/bind.c
+++ b/dlls/wldap32/bind.c
@@ -142,6 +142,8 @@ static int interact_callback( LDAP *ld, unsigned flags, void *defaults, void *sa

TRACE( "%p, %08xlx, %p, %p\n", ld, flags, defaults, sasl_interact );

+    if (!defaults) return 0;
+
     while (ptr && ptr->id != SASL_CB_LIST_END)
     {
         switch (ptr->id)