If the jitterbuffer is forced on then we can't partially bridge (reported by wangster on #asterisk-dev)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@45678 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -16375,6 +16375,8 @@ static enum ast_rtp_get_result sip_get_rtp_peer(struct ast_channel *chan, struct
 
 	if (ast_test_flag(&p->flags[0], SIP_CAN_REINVITE))
 		res = AST_RTP_TRY_NATIVE;
+	else if (ast_test_flag(&global_jbconf, AST_JB_FORCED))
+		res = AST_RTP_GET_FAILED;
 
 	ast_mutex_unlock(&p->lock);