From d4fec7949e72d3ec1feba34d2571153d939b9cd1 Mon Sep 17 00:00:00 2001
From: Paul Carpenter <paul@pcserviceselectronics.co.uk>
Date: Wed, 3 Oct 2018 00:02:36 +0100
Subject: [PATCH] V1.04 Fix wrong numbers reported from available()

PS2KeyRaw::available()reported wrong numbers empty or unused bytes

Simplify function
---
 src/PS2KeyRaw.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/PS2KeyRaw.cpp b/src/PS2KeyRaw.cpp
index 0e496e7..527a1cd 100644
--- a/src/PS2KeyRaw.cpp
+++ b/src/PS2KeyRaw.cpp
@@ -1,4 +1,4 @@
-/* Version V1.0.2
+/* Version V1.0.4
   PS2KeyRaw.cpp - PS2KeyRaw library
   Copyright (c) 2007 Free Software Foundation.  All right reserved.
   Written by Paul Carpenter, PC Services <sales@pcserviceselectronics.co.uk>
@@ -136,9 +136,7 @@ int8_t PS2KeyRaw::available()
 {
 int8_t  i;
 
-if( tail == head )
-  return false;
-i = tail - head;
+i = head - tail;
 if( i < 0 )
   i += BUFFER_SIZE;
 return i;