libcli: Add a NULL check in dom_sid_string

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jun 10 21:46:15 CEST 2014 on sn-devel-104

diff --git a/libcli/security/dom_sid.c b/libcli/security/dom_sid.c
index 90f54018d9894563103ccac6c5e76e39020f339b..836979e45096262a33d4118a8c5bce3f3f8eb951 100644 (file)
--- a/libcli/security/dom_sid.c
+++ b/libcli/security/dom_sid.c
@@ -414,6 +414,9 @@ char *dom_sid_string(TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
         * the length
         */
        result = (char *)talloc_memdup(mem_ctx, buf, len+1);
+       if (result == NULL) {
+               return NULL;
+       }
 
        /*
         * beautify the talloc_report output