From b2513ff11934ae365cf58043b1dbb167e7ecfb7f Mon Sep 17 00:00:00 2001
From: Santiago Gimeno <santiago.gimeno@quantion.es>
Date: Thu, 6 Nov 2014 10:58:24 +0100
Subject: [PATCH] src: add unistd.h to fix sleep compilation error

- Fix a couple of warnings.
---
 src/pcsclite.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/pcsclite.cpp b/src/pcsclite.cpp
index 007cd09..97af19c 100644
--- a/src/pcsclite.cpp
+++ b/src/pcsclite.cpp
@@ -1,3 +1,4 @@
+#include <unistd.h>
 #include "pcsclite.h"
 #include "common.h"
 
@@ -20,9 +21,9 @@ void PCSCLite::init(Handle<Object> target) {
     target->Set(NanNew("PCSCLite"), tpl->GetFunction());
 }
 
-PCSCLite::PCSCLite(): m_card_context(NULL),
+PCSCLite::PCSCLite(): m_card_context(0),
                       m_card_reader_state(),
-                      m_status_thread(NULL),
+                      m_status_thread(0),
                       m_closing(false) {
 
     pthread_mutex_init(&m_mutex, NULL);