The file descriptor is not leaked
The file descriptor is not leaked

Instead of passing it by value, make sure to have one variable holding
the file descriptor. This should help Coverity stop complaining about a
resource leak.

The steps:

    9.  Condition vbp_write_proxy_v1(vt, s) != 0, taking true branch.
    10. leaked_handle: Handle variable s going out of scope leaks
        the handle.

If the return value is non-zero the socket is VTCP_close'd.

Refs #2244

feld/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,feld/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,gquintard/Varnish-Cache