Only assign line and device in handle_transfer_button when we have a subchannel.

(closes issue #16040)
Reported by: ebroad

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@233059 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_skinny.c b/channels/chan_skinny.c
index 79eb2fb2b69877263ac0e92de3e5f877519bc23c..c7cfb15019dd2b5e5ef108a1b079ef48cfc1fc02 100644 (file)
--- a/channels/chan_skinny.c
+++ b/channels/chan_skinny.c
@@ -4544,8 +4544,8 @@ static int handle_hold_button(struct skinny_subchannel *sub)
 
 static int handle_transfer_button(struct skinny_subchannel *sub)
 {
-       struct skinny_line *l = sub->parent;
-       struct skinny_device *d = l->device;
+       struct skinny_line *l;
+       struct skinny_device *d;
        struct skinny_subchannel *newsub;
        struct ast_channel *c;
        pthread_t t;
@@ -4554,6 +4554,10 @@ static int handle_transfer_button(struct skinny_subchannel *sub)
                ast_verbose("Transfer: No subchannel to transfer\n");
                return -1;
        }
+
+       l = sub->parent;
+       d = l->device;
+
        if (!sub->related) {
                /* Another sub has not been created so this must be first XFER press */
                if (!sub->onhold) {