Update to 7-Zip Version 21.07

See: https://sourceforge.net/p/sevenzip/discussion/45797/thread/0a7b47970b/

CPP/7zip/Archive/VmdkHandler.cpp

@@ -1430,7 +1430,6 @@ HRESULT CExtent::Open3(IInStream *stream, IArchiveOpenCallback *openCallback,
 STDMETHODIMP CHandler::Close()
 {
   _phySize = 0;
-  _size = 0;
   
   _cacheCluster = (UInt64)(Int64)-1;
   _cacheExtent = (unsigned)(int)-1;
@@ -1450,8 +1449,10 @@ STDMETHODIMP CHandler::Close()
   _descriptorBuf.Free();
   _descriptor.Clear();
 
-  _imgExt = NULL;
-  Stream.Release(); // Stream vriable is unused
+  // CHandlerImg:
+  Clear_HandlerImg_Vars();
+  Stream.Release();
+
   _extents.Clear();
   return S_OK;
 }