Remove more unnecessary pointer-checks before delete (thx again @M. Elfring)

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5174 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CDepthBuffer.cpp

@@ -61,7 +61,6 @@ void CDepthBuffer::setSize(const core::dimension2d<u32>& size)
 
 	Size = size;
 
-	if (Buffer)
 	delete [] Buffer;
 
 	Pitch = size.Width * sizeof ( fp24 );
@@ -96,7 +95,6 @@ CStencilBuffer::CStencilBuffer(const core::dimension2d<u32>& size)
 //! destructor
 CStencilBuffer::~CStencilBuffer()
 {
-	if (Buffer)
 	delete [] Buffer;
 }
 
@@ -118,7 +116,6 @@ void CStencilBuffer::setSize(const core::dimension2d<u32>& size)
 
 	Size = size;
 
-	if (Buffer)
 	delete [] Buffer;
 
 	Pitch = size.Width * sizeof ( u32 );