Avoid NULL dereference when leaving a channel with a private key.

Split out a patch from Skywing <skywing@valhallalegends.com> to fix a
NULL pointer dereference when the client leaves a +k channel and the
local user had set a key for the channel.

diff --git a/lib/silcclient/client_channel.c b/lib/silcclient/client_channel.c
index 32dac873e13b7f97f0d1d7ca06a04f801f9c0e62..4120695d76af08286853fa5fc5bdf31f0f767220 100644 (file)
--- a/lib/silcclient/client_channel.c
+++ b/lib/silcclient/client_channel.c
@@ -630,7 +630,7 @@ SilcBool silc_client_del_channel_private_keys(SilcClient client,
     channel->cipher = silc_cipher_get_name(channel->internal.send_key);
   else
     channel->cipher = NULL;
     channel->cipher = silc_cipher_get_name(channel->internal.send_key);
   else
     channel->cipher = NULL;

-  if (channel->hmac)
+  if (channel->internal.hmac)

     channel->hmac = silc_hmac_get_name(channel->internal.hmac);
   else
     channel->hmac = NULL;
     channel->hmac = silc_hmac_get_name(channel->internal.hmac);
   else
     channel->hmac = NULL;