Make ZapScan wait 100ms for data

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2419 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_zapscan.c

@@ -256,6 +256,8 @@ static int conf_exec(struct ast_channel *chan, void *data)
                 ast_answer(chan);
 
         for (;;) {
+		if (ast_waitfor(chan, 100) < 0)
+			break;
 		f = ast_read(chan);
 		if (!f)
 			break;