ae fd52110019 Add NULL pointer check.
encap_lookup_t method can be invoked by IP encap subsytem even if none
of gif/gre/me interfaces are exist. Hash tables are allocated on demand,
when first interface is created. So, make NULL pointer check before
doing access to hash table.

PR:		229378
2018-06-28 11:39:27 +00:00
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