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pf: Fix more ioctl memory leaks
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Authored by kp on Jun 1 2021, 2:20 PM.

Details

Summary

We must also remember to free nvlists added to a parent nvlist with
nvlist_append_nvlist_array().

More importantly, when nvlist_pack() allocates memory for us it does so
in the M_NVLIST zone, so we must free it with free(.., M_NVLIST). Using
free(.., M_TEMP) as we did silently failed to free the memory.

MFC after: 3 days
Repored by: kib@
Sponsored by: Rubicon Communications, LLC ("Netgate")

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