Fix a problem with inband DTMF detection on outgoing SIP calls when dtmfmode=auto.

When dtmfmode was set to auto the inband DTMF detector was not setup
on outgoing SIP calls. This caused inband DTMF detection to fail.
The inband DTMF detector is now setup for both dtmfmode inband and auto.

(closes issue #13713)
Reported by: makoto


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@181295 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -4154,7 +4154,7 @@ static struct ast_channel *sip_new(struct sip_pvt *i, int state, const char *tit
 
 
 
-	if (ast_test_flag(&i->flags[0], SIP_DTMF) ==  SIP_DTMF_INBAND) {
+	if ((ast_test_flag(&i->flags[0], SIP_DTMF) == SIP_DTMF_INBAND) || (ast_test_flag(&i->flags[0], SIP_DTMF) == SIP_DTMF_AUTO)) {
 		i->vad = ast_dsp_new();
 		ast_dsp_set_features(i->vad, DSP_FEATURE_DTMF_DETECT);
 		if (global_relaxdtmf)