server: Always return Win32 error code from IOCTL_AFD_GET_SO_ERROR.

Signed-off-by: Piotr Caban <piotr@codeweavers.com>

server/sock.c

@@ -2804,12 +2804,13 @@ static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
             {
                 if (sock->errors[i])
                 {
-                    error = sock_get_error( sock->errors[i] );
+                    error = sock->errors[i];
                     break;
                 }
             }
         }
 
+        error = sock_get_error( error );
         set_reply_data( &error, sizeof(error) );
         return;
     }