Type fix.

main/network.go

@@ -38,7 +38,7 @@ type networkConnection struct {
 	Port            uint32
 	Capability      uint8
 	messageQueue    [][]byte // Device message queue.
-	MessageQueueLen uint64   // Length of the message queue. For debugging.
+	MessageQueueLen int      // Length of the message queue. For debugging.
 	/*
 		Sleep mode/throttle variables. "sleep mode" is actually now just a very reduced packet rate, since we don't know positively
 		 when a client is ready to accept packets - we just assume so if we don't receive ICMP Unreachable packets in 5 secs.