From 2a4a7b4ab8ea888f76dfb1aeebaf250d7d19d204 Mon Sep 17 00:00:00 2001
From: stojce <stojce@gmail.com>
Date: Wed, 6 Mar 2013 08:16:40 +0100
Subject: [PATCH] call gluDeleteQuadric only if sphare is initialised

---
 interface/src/Head.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/interface/src/Head.cpp b/interface/src/Head.cpp
index 1a7dc9a2d2..90e40ed180 100644
--- a/interface/src/Head.cpp
+++ b/interface/src/Head.cpp
@@ -80,8 +80,9 @@ Head::Head()
 }
 
 Head::~Head() {
-    // all data is primitive, do nothing
-    gluDeleteQuadric(sphere);
+    if (sphere) {
+        gluDeleteQuadric(sphere);
+    }
 }
 
 Head* Head::clone() const {