Suppress warning message when using DAHDITransfer or DAHDIHangup.

* The fake event should only be processed by the channel that currently
owns the private and not the associated call waiting or 3-way channel.

JIRA AST-620
JIRA SWP-3616


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@331771 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_dahdi.c

@@ -8927,8 +8927,11 @@ static struct ast_frame *dahdi_read(struct ast_channel *ast)
 		return &p->subs[idx].f;
 	}
 
-	/* If we have a fake_event, fake an exception to handle it */
-	if (p->fake_event) {
+	/*
+	 * If we have a fake_event, fake an exception to handle it only
+	 * if this channel owns the private.
+	 */
+	if (p->fake_event && p->owner == ast) {
 		if (analog_lib_handles(p->sig, p->radio, p->oprmode)) {
 			struct analog_pvt *analog_p = p->sig_pvt;