loos d6f7b17d78 Do not run the pf purge thread while the VNET variables are not
initialized, this can cause a divide by zero (if the VNET initialization
takes to long to complete).

Obtained from:	pfSense
MFC after:	2 weeks
Sponsored by:	Rubicon Communications, LLC (Netgate)
2017-01-29 02:17:52 +00:00
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