channel: Fix memory leak in suppress API.

A frame suppression API exists as part of channels
which allows audio frames to or from a channel to
be dropped. The MuteAudio AMI action uses this
API to perform its job.

This API uses a framehook to intercept flowing
audio and drop it when appropriate. It is the
responsibility of the framehook to free the
frame it is given if it changes the frame. The
suppression API failed to do this resulting in
a leak of audio frames.

This change adds the freeing of these frames.

ASTERISK-29071

Change-Id: Ie50acd454d672d36af914050c327d2e120d8ba7b

diff --git a/main/channel.c b/main/channel.c
index 784ea28447a0e427122fc0cd179e7b7e581c840d..3d6fae64d335afc9be2c46de71a0d605bdce2044 100644 (file)
--- a/main/channel.c
+++ b/main/channel.c
@@ -10845,6 +10845,7 @@ static struct ast_frame *suppress_framehook_event_cb(struct ast_channel *chan, s
        if (suppress_frame) {
                switch (frame->frametype) {
                case AST_FRAME_VOICE:
+                       ast_frfree(frame);
                        frame = &ast_null_frame;
                        break;
                default: