Handle panda.can_recv() returning either 3 or 4 items in the tuple (#8)

* Allow panda.can_recv() to return either 3 or 4 items in the tuple

* Update extract_keys.py

Co-authored-by: Willem Melching <willem.melching@gmail.com>

* Update extract_keys.py

---------

Co-authored-by: Willem Melching <willem.melching@gmail.com>

Author: calvinpark

extract_keys.py

@@ -191,7 +191,7 @@ def get_secoc_key(key_struct):
     with open(f'data_{start:08x}_{end:08x}.bin', 'wb') as f:
         with tqdm(total=end-start) as pbar:
             while start < end:
-                for addr, data, bus in panda.can_recv():
+                for addr, *_, data, bus in panda.can_recv():
                     if bus != BUS:
                         continue