From 078150da57752fb1644cf87f6e493a8c4bcab053 Mon Sep 17 00:00:00 2001
From: Alexander Gessler <alexander.gessler@gmx.net>
Date: Sat, 9 Feb 2013 17:42:11 +0100
Subject: [PATCH] - better way to construct NULL-shared_ptr

---
 code/IFCGeometry.cpp | 2 +-
 code/IfcBoolean.cpp  | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/code/IFCGeometry.cpp b/code/IFCGeometry.cpp
index cb2213d7e..1d9c11dca 100644
--- a/code/IFCGeometry.cpp
+++ b/code/IFCGeometry.cpp
@@ -764,7 +764,7 @@ bool ProcessGeometricItem(const IfcRepresentationItem& geo, std::vector<unsigned
 			conv.collect_openings->push_back(TempOpening(geo.ToPtr<IfcSolidModel>(),
 				IfcVector3(0,0,0),
 				meshtmp,
-				boost::shared_ptr<TempMesh>((TempMesh*)NULL)));
+				boost::shared_ptr<TempMesh>()));
 		}
 		return true;
 	} 
diff --git a/code/IfcBoolean.cpp b/code/IfcBoolean.cpp
index 681b3be0e..b52727c14 100644
--- a/code/IfcBoolean.cpp
+++ b/code/IfcBoolean.cpp
@@ -582,8 +582,7 @@ void ProcessBooleanExtrudedAreaSolidDifference(const IfcExtrudedAreaSolid* as, T
 	boost::shared_ptr<TempMesh> meshtmp = boost::shared_ptr<TempMesh>(new TempMesh());
 	ProcessExtrudedAreaSolid(*as,*meshtmp,conv,false);
 
-	std::vector<TempOpening> openings(1, TempOpening(as,IfcVector3(0,0,0),meshtmp,
-		boost::shared_ptr<TempMesh>((TempMesh*)NULL)));
+	std::vector<TempOpening> openings(1, TempOpening(as,IfcVector3(0,0,0),meshtmp,boost::shared_ptr<TempMesh>()));
 
 	result = first_operand;