apps/app_dial: Fix crash on non-connect call paths for Privacy/Screening option

In any scenario in which the callee is not connected to the caller, the
current code in app_dial will crash due to raising a Dial End Stasis
Message after the callee channel has been hung up. This patch corrects
the error by simply moving the explicit hangup of the callee (peer)
channel until after the dial end message.

ASTERISK-25691 #close

Change-Id: I816a414014424d0d8c80e2a3cbef13ef8c63798d

apps/app_dial.c

@@ -1946,8 +1946,6 @@ static int do_privacy(struct ast_channel *chan, struct ast_channel *peer,
 		}
 		return 0; /* the good exit path */
 	} else {
-		/* hang up on the callee -- he didn't want to talk anyway! */
-		ast_autoservice_chan_hangup_peer(chan, peer);
 		return -1;
 	}
 }
@@ -2804,6 +2802,8 @@ static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast
 		if ( (ast_test_flag64(&opts, OPT_PRIVACY) || ast_test_flag64(&opts, OPT_SCREENING)) && pa.privdb_val == AST_PRIVACY_UNKNOWN) {
 			if (do_privacy(chan, peer, &opts, opt_args, &pa)) {
 				ast_channel_publish_dial(chan, peer, NULL, pa.status);
+				/* hang up on the callee -- he didn't want to talk anyway! */
+				ast_autoservice_chan_hangup_peer(chan, peer);
 				res = 0;
 				goto out;
 			}