chan_vpb.cc: Fix compile errors.

Fix the usual compile problem when someone adds a new callback to struct
ast_channel_tech.

Change-Id: I9bdeb8a8cc65f03b2d6e4f2eb5809af47c906c32

diff --git a/channels/chan_vpb.cc b/channels/chan_vpb.cc
index fe99d5df0b7f914aea66d87f5980181200e03d63..cde5d483b919ac065e5a86c07f1affe1c703b760 100644 (file)
--- a/channels/chan_vpb.cc
+++ b/channels/chan_vpb.cc
@@ -372,6 +372,7 @@ static struct ast_channel_tech vpb_tech = {
        .call = vpb_call,
        .hangup = vpb_hangup,
        .answer = vpb_answer,
+       .answer_with_stream_topology = NULL,
        .read = vpb_read,
        .read_stream = NULL,
        .write = vpb_write,
@@ -406,6 +407,7 @@ static struct ast_channel_tech vpb_tech_indicate = {
        .call = vpb_call,
        .hangup = vpb_hangup,
        .answer = vpb_answer,
+       .answer_with_stream_topology = NULL,
        .read = vpb_read,
        .read_stream = NULL,
        .write = vpb_write,