Override ReadByte in PacketReader.

Turns out, the normal BinaryReader was calling NetworkStream.ReadByte, which didn't override ReadByte. As such, every single call to ReadByte would wastefully allocate a 1 element byte array, which ended up being responsible for a significant portion of allocations when running server for extended periods of time.

Author: UnknownShadow200

fCraft/Network/PacketReader.cs

@@ -13,7 +13,14 @@ public PacketReader( [NotNull] Stream stream ) :
         public OpCode ReadOpCode() {
             return (OpCode)ReadByte();
         }
-
+        
+        byte[] oneBuffer = new byte[1];
+        public override byte ReadByte() {
+            int count = BaseStream.Read(oneBuffer, 0, 1);
+            if (count == -1) throw new EndOfStreamException("End of file");
+            return oneBuffer[0];
+        }
+        
         public override short ReadInt16() {
             return IPAddress.NetworkToHostOrder( base.ReadInt16() );
         }