[PATCH] resolv: Always set *resplen2 out parameter in send_vc [BZ #19825]

[Florian Weimer]

In various error scenarios (for example, if the server closes the
TCP connection before sending the full response), send_vc can return
without resetting the *resplen2 value.  This can pass uninitialized
or unexpected data to the caller.

Florian
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