hv_sock: Suppress bogus "may be used uninitialized" warnings

gcc 8.2.0 may report these bogus warnings under some condition:

warning: ‘vnew’ may be used uninitialized in this function
warning: ‘hvs_new’ may be used uninitialized in this function

Actually, the 2 pointers are only initialized and used if the variable
"conn_from_host" is true. The code is not buggy here.

Signed-off-by: Dexuan Cui <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/vmw_vsock/hyperv_transport.c

···
 
 	struct sockaddr_vm addr;
 	struct sock *sk, *new = NULL;
-	struct vsock_sock *vnew;
-	struct hvsock *hvs, *hvs_new;
+	struct vsock_sock *vnew = NULL;
+	struct hvsock *hvs, *hvs_new = NULL;
 	int ret;
 
 	if_type = &chan->offermsg.offer.if_type;