From 837f0b52a39d531f5a938579ff38956f641926a2 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Thu, 3 Jan 2013 22:03:46 +0100
Subject: [PATCH] Fixed BufferMapper crash when buffer is nullptr

Former-commit-id: 4f77a158cf93a4d7acbce50ac0454c38ea6cf412
---
 include/Nazara/Utility/BufferMapper.inl | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/include/Nazara/Utility/BufferMapper.inl b/include/Nazara/Utility/BufferMapper.inl
index 5b0b0d77f..437a42e58 100644
--- a/include/Nazara/Utility/BufferMapper.inl
+++ b/include/Nazara/Utility/BufferMapper.inl
@@ -12,9 +12,14 @@ template<typename T>
 NzBufferMapper<T>::NzBufferMapper(T* buffer, nzBufferAccess access, unsigned int offset, unsigned int length) :
 m_buffer(buffer)
 {
-	m_ptr = buffer->Map(access, offset, length);
-	if (!m_ptr)
-		NazaraError("Failed to map buffer"); ///TODO: Unexpected
+	if (m_buffer)
+	{
+		m_ptr = buffer->Map(access, offset, length);
+		if (!m_ptr)
+			NazaraError("Failed to map buffer"); ///TODO: Unexpected
+	}
+	else
+		m_ptr = nullptr;
 }
 
 template<typename T>
@@ -27,9 +32,14 @@ template<typename T>
 NzBufferMapper<T>::NzBufferMapper(const T* buffer, nzBufferAccess access, unsigned int offset, unsigned int length) :
 m_buffer(buffer)
 {
-	m_ptr = buffer->Map(access, offset, length);
-	if (!m_ptr)
-		NazaraError("Failed to map buffer"); ///TODO: Unexpected
+	if (m_buffer)
+	{
+		m_ptr = buffer->Map(access, offset, length);
+		if (!m_ptr)
+			NazaraError("Failed to map buffer"); ///TODO: Unexpected
+	}
+	else
+		m_ptr = nullptr;
 }
 
 template<typename T>