tree 22e57cbb8df2c245a00ae2dc4ab11f9acf37fbc0
parent 51b45a52adf944ac391c0e90f86597454ab4d657
author Christian Franke <nobody@nowhere.ws> 1465244535 +0200
committer Paul Jakma <paul@quagga.net> 1485197513 +0000

bgpd: fix potential crash in community_list_dup_check

extcommunity_list_set may set the ->config for an entry
to NULL. In this case, the old code in community_list_dup_check
would cause a NULL pointer dereference.

Adjust the code so it behaves the same in the absence of NULL
pointers and otherwise checks if both are NULL to determine
equality.

Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Tested-by: NetDEF CI System <cisystem@netdef.org>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>