winbindd: Add a missing NULL check

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

diff --git a/source3/winbindd/winbindd_ping_dc.c b/source3/winbindd/winbindd_ping_dc.c
index 374781902fd50b128b332d375a5031e811f27790..8000493db45da846bd5e253542c57787c4c7457b 100644 (file)
--- a/source3/winbindd/winbindd_ping_dc.c
+++ b/source3/winbindd/winbindd_ping_dc.c
@@ -129,6 +129,9 @@ NTSTATUS winbindd_ping_dc_recv(struct tevent_req *req,
 
        if (state->dcname) {
                presp->extra_data.data = talloc_strdup(presp, state->dcname);
+               if (presp->extra_data.data == NULL) {
+                       return NT_STATUS_NO_MEMORY;
+               }
                presp->length += strlen((char *)presp->extra_data.data) + 1;
        }