From 1387904c217925d04d22ee158c53aef21caf0bd5 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <mail@cynapses.org>
Date: Tue, 9 Sep 2008 15:09:16 +0200
Subject: [PATCH] Add NULL check for the auth_cb function.

---
 modules/csync_smb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/csync_smb.c b/modules/csync_smb.c
index a12f40a68..61f7dcc2c 100644
--- a/modules/csync_smb.c
+++ b/modules/csync_smb.c
@@ -489,7 +489,9 @@ csync_vio_method_t *vio_module_init(const char *method_name, const char *args,
     return NULL;
   }
 
-  auth_cb = cb;
+  if (cb != NULL) {
+    auth_cb = cb;
+  }
 
   /* set debug level and authentication function callback */
 #ifdef DEPRECATED_SMBC_INTERFACE