[SHELL32]

- Also make My Computer a singleton, as shown by the CMyComputer test. With r68210 and this commit, SHFileOperation on a large number of files is approximately 3 times as fast.
CORE-9839 #resolve

svn path=/trunk/; revision=68212

reactos/dll/win32/shell32/folders/CDrivesFolder.cpp

@@ -161,6 +161,7 @@ CDrivesFolder::CDrivesFolder()
 CDrivesFolder::~CDrivesFolder()
 {
     TRACE ("-- destroying IShellFolder(%p)\n", this);
+    ASSERT(_CreatorClass::IsTerminated());
     SHFree(pidlRoot);
 }
 

reactos/dll/win32/shell32/folders/CDrivesFolder.h

@@ -69,7 +69,7 @@ class CDrivesFolder :
         virtual HRESULT WINAPI GetCurFolder(LPITEMIDLIST * pidl);
 
         DECLARE_REGISTRY_RESOURCEID(IDR_MYCOMPUTER)
-        DECLARE_NOT_AGGREGATABLE(CDrivesFolder)
+        DECLARE_SINGLETON_NOT_AGGREGATABLE(CDrivesFolder)
 
         DECLARE_PROTECT_FINAL_CONSTRUCT()
 

reactos/dll/win32/shell32/shell32.cpp

@@ -151,6 +151,7 @@ class CShell32Module : public CComModule
 public:
     void Term()
     {
+        CComCreatorSingleton< ATL::CComObject< CDrivesFolder > >::Term();
         CComCreatorSingleton< ATL::CComObject< CDesktopFolder > >::Term();
         CComModule::Term();
     }