From b06cdea579b0c1066c09ef32f423d70790499523 Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Wed, 20 Jan 2016 12:19:07 +0100
Subject: [PATCH] Use CGAL_USE in Visibility_2 too

---
 Visibility_2/include/CGAL/Triangular_expansion_visibility_2.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Visibility_2/include/CGAL/Triangular_expansion_visibility_2.h b/Visibility_2/include/CGAL/Triangular_expansion_visibility_2.h
index d27d21e2eaf..1e86cc862d2 100644
--- a/Visibility_2/include/CGAL/Triangular_expansion_visibility_2.h
+++ b/Visibility_2/include/CGAL/Triangular_expansion_visibility_2.h
@@ -28,6 +28,7 @@
 #include <CGAL/Constrained_Delaunay_triangulation_2.h>
 #include <CGAL/Arr_observer.h>
 #include <CGAL/assertions.h>
+#include <CGAL/use.h>
 
 namespace CGAL {
 
@@ -217,6 +218,7 @@ public:
 
     out_arr.clear();
     needles.clear();
+    CGAL_USE(face);
     CGAL_assertion(!face->is_unbounded());