[nsock] superfluous pcap_read_on_nonselect() call

[Henri Doreau <henri.doreau () gmail com>]

Hello,

it looks like the nsock function pcap_read_on_nonselect() is called
even when not needed (i.e.: called on systems that provide selectable
pcap FDs). I would suggest to protect the statement by a #ifndef
PCAP_CAN_DO_SELECT.

I have successfully tested it on linux and freebsd (that both have
selectable pcap FDs), but since this was already in place for a long
time (before nsock-engines) I would appreciate to get this simple
patch (attached) reviewed to avoid introducing a regression.

Regards.

-- 
Henri

Attachment: nsock_pcap_nonselect.diff
Description:

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