Upstream fix that will be included in the another release of pcsclite.

From 2269f10c2d2c5be1308d59469722024650a19b6d Mon Sep 17 00:00:00 2001
From: Ludovic Rousseau <[email protected]>
Date: Wed, 13 Apr 2016 18:29:53 +0200
Subject: [PATCH] SCardConnect(): fix a Valgrind warning

==19635== Memcheck, a memory error detector
==19635== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==19635== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==19635== Command: /usr/rtests/bin/Pkcs11UnitTest.X64 pkcs11_common
==19635==
Running pkcs11_common
pkcs11_common::testGetInfo==19635== Syscall param socketcall.sendto(msg) points to uninitialised byte(s)
==19635== at 0x605A1F7: send (send.c:32)
==19635== by 0xBC47CE6: ??? (in /lib/x86_64-linux-gnu/libpcsclite.so.1.0.0)
==19635== by 0xBC47E22: ??? (in /lib/x86_64-linux-gnu/libpcsclite.so.1.0.0)
==19635== by 0xBC43BBE: SCardConnect (in /lib/x86_64-linux-gnu/libpcsclite.so.1.0.0)
...

The field scConnectStruct.szReader (containing the reader name) was not
completely initialized.

Thanks to Andrey Roussev for the patch
https://lists.alioth.debian.org/pipermail/pcsclite-muscle/Week-of-Mon-20160404/000560.html
---
 src/winscard_clnt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/winscard_clnt.c b/src/winscard_clnt.c
index e36cab7..ea480de 100644
--- a/src/winscard_clnt.c
+++ b/src/winscard_clnt.c
@@ -794,6 +794,7 @@ LONG SCardConnect(SCARDCONTEXT hContext, LPCSTR szReader,
 	if (NULL == currentContextMap)
 		return SCARD_E_INVALID_HANDLE;
 
+	memset(scConnectStruct.szReader, 0, sizeof scConnectStruct.szReader);
 	strncpy(scConnectStruct.szReader, szReader, sizeof scConnectStruct.szReader);
 	scConnectStruct.szReader[sizeof scConnectStruct.szReader -1] = '\0';
 
-- 
1.9.1