chan_sip: Fix early call pickup channel leak.

When handle_invite_replaces() was called, and either ast_bridge_impart()
failed or there was no bridge (because the channel we're picking up was
still ringing), chan_sip would leak a channel.

Thanks Matt and Corey for checking the bridge path.

ASTERISK-25226 #close

Change-Id: Ie736bb182170a73eef5bcef0ab0376f645c260c8

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 96609d2..412a257 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -24926,10 +24926,12 @@ static int handle_invite_replaces(struct sip_pvt *p, struct sip_request *req,
                if (ast_bridge_impart(bridge, c, replaces_chan, NULL,
                        AST_BRIDGE_IMPART_CHAN_INDEPENDENT)) {
                        ast_hangup(c);
+                       ast_channel_unref(c);
                }
        } else {
                ast_channel_move(replaces_chan, c);
                ast_hangup(c);
+               ast_channel_unref(c);
        }
        sip_pvt_lock(p);
        return 0;