packets/PlayerConnect: Initialize maxPlayerCount

It was sending bad data since it wasn't getting inited anywhere.

include/packets/PlayerConnect.h

@@ -2,9 +2,11 @@
 
 #include "Packet.h"
 
+#include <cstdint>
+
 struct PACKED PlayerConnect : Packet {
     PlayerConnect() : Packet() {this->mType = PacketType::PLAYERCON; mPacketSize = sizeof(PlayerConnect) - sizeof(Packet);};
     ConnectionTypes conType;
-    u16 maxPlayerCount;
+    u16 maxPlayerCount = USHRT_MAX;
     char clientName[COSTUMEBUFSIZE] = {};
 };