removed useless code

In destructors, zeroing attributes or clearing containers is utterly useless.

code/AssetLib/3MF/D3MFOpcPackage.cpp

@@ -186,7 +186,6 @@ D3MFOpcPackage::D3MFOpcPackage(IOSystem *pIOHandler, const std::string &rFile) :
 D3MFOpcPackage::~D3MFOpcPackage() {
     mZipArchive->Close(mRootStream);
     delete mZipArchive;
-    mZipArchive = nullptr;
 }
 
 IOStream *D3MFOpcPackage::RootStream() const {

code/AssetLib/OpenGEX/OpenGEXImporter.cpp

@@ -290,7 +290,6 @@ OpenGEXImporter::OpenGEXImporter() :
 
 //------------------------------------------------------------------------------------------------
 OpenGEXImporter::~OpenGEXImporter() {
-    m_ctx = nullptr;
 }
 
 //------------------------------------------------------------------------------------------------

code/AssetLib/Q3BSP/Q3BSPFileImporter.cpp

@@ -146,9 +146,6 @@ Q3BSPFileImporter::Q3BSPFileImporter() :
 // ------------------------------------------------------------------------------------------------
 //  Destructor.
 Q3BSPFileImporter::~Q3BSPFileImporter() {
-    m_pCurrentMesh = nullptr;
-    m_pCurrentFace = nullptr;
-
     // Clear face-to-material map
     for (FaceMap::iterator it = m_MaterialLookupMap.begin(); it != m_MaterialLookupMap.end(); ++it) {
         const std::string &matName = it->first;
@@ -156,7 +153,6 @@ Q3BSPFileImporter::~Q3BSPFileImporter() {
             delete it->second;
         }
     }
-    m_MaterialLookupMap.clear();
 }
 
 // ------------------------------------------------------------------------------------------------

code/AssetLib/Q3BSP/Q3BSPFileParser.cpp

@@ -78,7 +78,6 @@ Q3BSPFileParser::Q3BSPFileParser( const std::string &mapName, ZipArchiveIOSystem
 // ------------------------------------------------------------------------------------------------
 Q3BSPFileParser::~Q3BSPFileParser() {
     delete m_pModel;
-    m_pModel = nullptr;
 }
 
 // ------------------------------------------------------------------------------------------------

code/AssetLib/XGL/XGLLoader.cpp

@@ -100,7 +100,6 @@ XGLImporter::XGLImporter() :
 // Destructor, private as well
 XGLImporter::~XGLImporter() {
 	delete mXmlParser;
-    mXmlParser = nullptr;
 }
 
 // ------------------------------------------------------------------------------------------------

code/CApi/CInterfaceIOWrapper.cpp

@@ -51,7 +51,6 @@ CIOStreamWrapper::~CIOStreamWrapper() {
     /* Various places depend on this destructor to close the file */
     if (mFile) {
         mIO->mFileSystem->CloseProc(mIO->mFileSystem, mFile);
-        mFile = nullptr;
     }
 }
 

code/Common/DefaultIOStream.cpp

@@ -82,7 +82,6 @@ inline int select_fseek<8>(FILE *file, int64_t offset, int origin) {
 DefaultIOStream::~DefaultIOStream() {
     if (mFile) {
         ::fclose(mFile);
-        mFile = nullptr;
     }
 }
 

code/Common/ZipArchiveIOSystem.cpp

@@ -352,7 +352,6 @@ ZipArchiveIOSystem::Implement::Implement(IOSystem *pIOHandler, const char *pFile
 ZipArchiveIOSystem::Implement::~Implement() {
     if (m_ZipFileHandle != nullptr) {
         unzClose(m_ZipFileHandle);
-        m_ZipFileHandle = nullptr;
     }
 }