mgiuca e987a47f95 Removed some unused variables in Windows code.
Note: Regarding the ICMP6_CLOSE_FUNC variable in winping.cc,
Icmp6CloseHandle does not exist, and IcmpCloseHandle is the correct way
to close an IPv6 handle. Therefore the existing code is correct to use
close_ on both types of connections and this variable is unnecessary.

BUG=505319

Review URL: https://codereview.webrtc.org/1231653003

Cr-Commit-Position: refs/heads/master@{#9555}
2015-07-09 07:54:02 +00:00
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