Fix a compilation error in the configuration where this is compiled.
Unless I missed something, it is broken since r1516930 (Aug 23 2013).
So no-one has compiled this for more than 8 years.
Sounds like dead code.
@@ -2831,7 +2831,7 @@ PROXY_DECLARE(int) ap_proxy_is_socket_connected(apr_socket_t *socket)
}
#else
-PROXY_DECLARE(int) ap_proxy_is_socket_connected(apr_socket_t *socket)
+PROXY_DECLARE(int) ap_proxy_is_socket_connected(apr_socket_t *sock)
{
apr_size_t buffer_len = 1;
