check a pointer before dereferencing it; not sure why userdata == NULL though

(This used to be commit 6fca29ddcdb111af24ee051b555ab4eec8cadd1d)

diff --git a/source3/nmbd/nmbd_browsesync.c b/source3/nmbd/nmbd_browsesync.c
index 84c6f43f57099c3683e9b3dfa99329e1640616fe..5914ea9637ca1cc46c29bbc0a380625f2d3ea68c 100644 (file)
--- a/source3/nmbd/nmbd_browsesync.c
+++ b/source3/nmbd/nmbd_browsesync.c
@@ -258,7 +258,7 @@ static void domain_master_node_status_fail(struct subnet_record *subrec,
   {
     dbgtext( "domain_master_node_status_fail:\n" );
     dbgtext( "Doing a node status request to the domain master browser\n" );
-    dbgtext( "for workgroup %s ", userdata->data );
+    dbgtext( "for workgroup %s ", userdata ? userdata->data : "NULL" );
     dbgtext( "at IP %s failed.\n", inet_ntoa(rrec->packet->ip) );
     dbgtext( "Cannot sync browser lists.\n" );
   }