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/1.4@222691 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index 489cac42856071a1bef1d11e1d31369f2109fead..b9df9f898db52b85764d8b62901d03679293c265 100644 (file)
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -2715,8 +2715,12 @@ 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_log(LOG_DEBUG, "Detected inband DTMF digit: %c\n", f->subclass);