BUG/MINOR: stick-table/cli: Check for invalid ipv6 key

When an ipv6 key is used to filter a CLI command on a stick table
(clear/set/show table ...), the return value of inet_pton() call must be
checked to be sure the key is valid.

This patch should fix the issue #1163. It should be backported to all
supported versions.
1 file changed