From 8aa78b7f88b5f20077a80556ba71bd05e4bfd308 Mon Sep 17 00:00:00 2001
From: Richard Mudgett <rmudgett@digium.com>
Date: Wed, 7 Oct 2009 22:05:52 +0000
Subject: [PATCH] Merged revisions 222692 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/trunk

................
  r222692 | rmudgett | 2009-10-07 16:56:36 -0500 (Wed, 07 Oct 2009) | 21 lines

  Merged revisions 222691 via svnmerge from
  https://origsvn.digium.com/svn/asterisk/branches/1.4

  ........
    r222691 | rmudgett | 2009-10-07 16:51:24 -0500 (Wed, 07 Oct 2009) | 14 lines

    chan_misdn.c:process_ast_dsp() memory leak

    misdn.conf: astdtmf must be set to "yes".  With "no", buffer loss does not
    occur.

    The translated frame "f2" when passing through ast_dsp_process() is not
    freed whenever it is not used further in process_ast_dsp().  Then in the
    end it is never ever freed.

    Patches:
          translate.patch

    JIRA ABE-1993
  ........
................


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@222695 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_misdn.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index e58b93ceda..402e9a4c14 100644
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -2986,8 +2986,12 @@ static struct ast_frame *process_ast_dsp(struct chan_list *tmp, struct ast_frame
 		return NULL;
 	}
 
- 	if (!f || (f->frametype != AST_FRAME_DTMF))
- 		return frame;
+	if (!f || (f->frametype != AST_FRAME_DTMF)) {
+		if (f) {
+			ast_frfree(f);
+		}
+		return frame;
+	}
  
 	ast_debug(1, "Detected inband DTMF digit: %c\n", f->subclass);