Don't wait forever, if there's a specified recording timeout.

(closes issue #13885)
 Reported by: bamby
 Patches: 
       res_agi.c.patch uploaded by bamby (license 430)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@163088 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_agi.c

@@ -970,7 +970,7 @@ static int handle_recordfile(struct ast_channel *chan, AGI *agi, int argc, char
 		
 		start = ast_tvnow();
 		while ((ms < 0) || ast_tvdiff_ms(ast_tvnow(), start) < ms) {
-			res = ast_waitfor(chan, -1);
+			res = ast_waitfor(chan, ms - ast_tvdiff_ms(ast_tvnow(), start));
 			if (res < 0) {
 				ast_closestream(fs);
 				fdprintf(agi->fd, "200 result=%d (waitfor) endpos=%ld\n", res,sample_offset);