When ending a recording with silence detection, remember to reduce the duration.

The end of the recording is correspondingly trimmed, but the duration was not
trimmed by the number of seconds trimmed, so the saved duration was necessarily
longer than the actual soundfile duration.
(closes issue #14406)
 Reported by: sasargen
 Patches: 
       20090226__bug14406.diff.txt uploaded by tilghman (license 14)
 Tested by: sasargen


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@179468 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/app.c

@@ -731,8 +731,16 @@ static int __ast_play_and_record(struct ast_channel *chan, const char *playfile,
 			 * off the recording.  However, if we ended with '#', we don't want
 			 * to trim ANY part of the recording.
 			 */
-			if (res > 0 && totalsilence)
+			if (res > 0 && totalsilence) {
 				ast_stream_rewind(others[x], totalsilence - 200);
+				/* Reduce duration by a corresponding amount */
+				if (x == 0 && *duration) {
+					*duration -= (totalsilence - 200) / 1000;
+					if (*duration < 0) {
+						*duration = 0;
+					}
+				}
+			}
 			ast_truncstream(others[x]);
 			ast_closestream(others[x]);
 		}