Type fix.

main/network.go

@@ -219,10 +219,9 @@ func messageQueueSender() {
 					pd = float64(1.0/2500.0)
 				}
 				queueTimer.Stop()
-				queueTimer = time.NewTicker(int(pd * 1000000000.0) * time.Nanosecond)
+				queueTimer = time.NewTicker(time.Duration(pd * 1000000000.0) * time.Nanosecond)
 				lastQueueTimeChange = time.Now()
 			}
-			averageSendableQueueSize 
 			netMutex.Unlock()
 		case <-secondTimer.C:
 			getNetworkStats()