From 14a9b130a1ea420616a5b401f585de2b068de285 Mon Sep 17 00:00:00 2001
From: kichik <kichik@212acab6-be3b-0410-9dea-997c60f758d6>
Date: Sat, 6 Aug 2005 16:12:35 +0000
Subject: [PATCH] use Var /GLOBAL to avoid annoying warning

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@4212 212acab6-be3b-0410-9dea-997c60f758d6
---
 Include/Library.nsh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Include/Library.nsh b/Include/Library.nsh
index 83d453cc..403ea7a0 100644
--- a/Include/Library.nsh
+++ b/Include/Library.nsh
@@ -28,11 +28,17 @@
   !define SHCNF_IDLIST 0x0000
 !endif
 
-Var __INSTALLLLIB_SESSIONGUID
-
 ### Initialize session id (GUID)
 !macro __InstallLib_Helper_InitSession
 
+  !ifndef __InstallLib_SessionGUID_Defined
+
+    !define __InstallLib_SessionGUID_Defined
+
+    Var /GLOBAL __INSTALLLLIB_SESSIONGUID
+
+  !endif
+
   StrCmp $__INSTALLLLIB_SESSIONGUID '' 0 +6
 
     System::Alloc 16