func_scramble: Fix null pointer dereference.

Fix segfault due to null pointer dereference
inside the audiohook callback.

ASTERISK-30220 #close

Change-Id: Ideb80f606974366e89d619d908744230b5a5a259

diff --git a/funcs/func_scramble.c b/funcs/func_scramble.c
index 5fe194cd15f3dbe4f767966a130e0b8fb90ca7c1..e055b2dc8a216dc74459481e56876d2843e4f4cd 100644 (file)
--- a/funcs/func_scramble.c
+++ b/funcs/func_scramble.c
@@ -125,6 +125,7 @@ static int scramble_callback(struct ast_audiohook *audiohook, struct ast_channel
        }
 
        if (frame->frametype == AST_FRAME_VOICE) { /* only invert voice frequencies */
+               ni = datastore->data;
                /* Based on direction of frame, and confirm it is applicable */
                if (!(direction == AST_AUDIOHOOK_DIRECTION_READ ? ni->rx : ni->tx)) {
                        return 0;