Port over RCE Patches from LCEMP (#1023)

* LCEMP RCE Fixes WIP

Based on https://github.com/LCEMP/LCEMP/commit/d017bfc30a68888bf5c79b23cf5c4f607cf828bf

* Update to LCEMP's ByteArrayIO version

Fixes compilation since ours was missing some revisions from LCEMP

* Add additional safety checks missed in first pass

* Remove duplicate recipe count check

Minecraft.World/RemoveEntitiesPacket.cpp

@@ -21,7 +21,9 @@ RemoveEntitiesPacket::~RemoveEntitiesPacket()
 
 void RemoveEntitiesPacket::read(DataInputStream *dis) //throws IOException 
 {
-	ids = intArray(dis->readByte());
+	int count = dis->readByte();
+	if(count < 0) count = 0;
+	ids = intArray(count);
 	for(unsigned int i = 0; i < ids.length; ++i)
 	{
 		ids[i] = dis->readInt();