initiate Ping() timeout after collecting the stats

We have a hardcoded timeout of one second to send the daemon stats to
the GUI. In some cases it's not unusual to hit the deadline.

So in order to just measure the network call, we now initiate the
timeout after collecting the daemon statistics.

See: #1453

Author: gustavo-iniguez-goya

daemon/ui/client.go

@@ -326,14 +326,16 @@ func (c *Client) ping(ts time.Time) (err error) {
 	c.Lock()
 	defer c.Unlock()
 
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
-	defer cancel()
 	reqID := uint64(ts.UnixNano())
 
 	pReq := &protocol.PingRequest{
 		Id:    reqID,
 		Stats: c.stats.Serialize(),
 	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+
 	c.stats.RLock()
 	pong, err := c.client.Ping(ctx, pReq)
 	c.stats.RUnlock()