From be7afed1446896e2ce2c20651dfffe96fca93bb9 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Fri, 4 Jan 2013 16:29:53 +0100
Subject: [PATCH] Fixed BufferMapper::Unmap crash when called twice

Former-commit-id: aaf7ead6e93c74c79d6d3e6c3cb743030634eacd
---
 include/Nazara/Utility/BufferMapper.inl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/Nazara/Utility/BufferMapper.inl b/include/Nazara/Utility/BufferMapper.inl
index 437a42e58..d3390cf19 100644
--- a/include/Nazara/Utility/BufferMapper.inl
+++ b/include/Nazara/Utility/BufferMapper.inl
@@ -70,8 +70,11 @@ void* NzBufferMapper<T>::GetPointer() const
 template<typename T>
 void NzBufferMapper<T>::Unmap()
 {
-	m_buffer->Unmap();
-	m_buffer = nullptr;
+	if (m_buffer)
+	{
+		m_buffer->Unmap();
+		m_buffer = nullptr;
+	}
 }
 
 #include <Nazara/Core/DebugOff.hpp>