s3-rpc_server: Fix a possible null pointer dereference.

This variable can be set to NULL in an earlier function call.

Found by Coverity.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>

diff --git a/source3/rpc_server/spoolss/srv_spoolss_nt.c b/source3/rpc_server/spoolss/srv_spoolss_nt.c
index b8ee9f407249c9ced17051d4c3283b6d298d015d..531b2898ab0d2093decf3f915746061693666b03 100644 (file)
--- a/source3/rpc_server/spoolss/srv_spoolss_nt.c
+++ b/source3/rpc_server/spoolss/srv_spoolss_nt.c
@@ -4428,7 +4428,8 @@ static WERROR enum_all_printers_info_1_name(TALLOC_CTX *mem_ctx,
 
        DEBUG(4,("enum_all_printers_info_1_name\n"));
 
-       if ((servername[0] == '\\') && (servername[1] == '\\')) {
+       if (servername != NULL &&
+           (servername[0] == '\\') && (servername[1] == '\\')) {
                s = servername + 2;
        }