shell32: Fix remaining cases of implementation pointer being returned.

dlls/shell32/shfldr_desktop.c

@@ -112,7 +112,7 @@ static HRESULT WINAPI ISF_Desktop_fnQueryInterface(
         IsEqualIID (riid, &IID_IShellFolder) ||
         IsEqualIID (riid, &IID_IShellFolder2))
     {
-        *ppvObj = This;
+        *ppvObj = &This->IShellFolder2_iface;
     }
     else if (IsEqualIID (riid, &IID_IPersist) ||
              IsEqualIID (riid, &IID_IPersistFolder) ||

dlls/shell32/shfldr_mycomp.c

@@ -140,7 +140,7 @@ static HRESULT WINAPI ISF_MyComputer_fnQueryInterface (IShellFolder2 *iface,
         IsEqualIID (riid, &IID_IShellFolder) ||
         IsEqualIID (riid, &IID_IShellFolder2))
     {
-        *ppvObj = This;
+        *ppvObj = &This->IShellFolder2_iface;
     }
     else if (IsEqualIID (riid, &IID_IPersist) ||
              IsEqualIID (riid, &IID_IPersistFolder) ||

dlls/shell32/shfldr_netplaces.c

@@ -133,7 +133,7 @@ static HRESULT WINAPI ISF_NetworkPlaces_fnQueryInterface (IShellFolder2 *iface,
         IsEqualIID (riid, &IID_IShellFolder) ||
         IsEqualIID (riid, &IID_IShellFolder2))
     {
-        *ppvObj = This;
+        *ppvObj = &This->IShellFolder2_iface;
     }
     else if (IsEqualIID (riid, &IID_IPersist) ||
              IsEqualIID (riid, &IID_IPersistFolder) ||

dlls/shell32/shfldr_printers.c

@@ -80,7 +80,7 @@ static HRESULT WINAPI IShellFolder_Printers_fnQueryInterface(IShellFolder2 *ifac
         IsEqualIID (riid, &IID_IShellFolder) ||
         IsEqualIID (riid, &IID_IShellFolder2))
     {
-        *ppvObj = This;
+        *ppvObj = &This->IShellFolder2_iface;
     }
     else if (IsEqualIID (riid, &IID_IPersist) ||
              IsEqualIID (riid, &IID_IPersistFolder) ||

dlls/shell32/shlview.c

@@ -1751,17 +1751,11 @@ static HRESULT WINAPI IShellView_fnQueryInterface(IShellView2 *iface, REFIID rii
 
 	*ppvObj = NULL;
 
-	if(IsEqualIID(riid, &IID_IUnknown))
+	if(IsEqualIID(riid, &IID_IUnknown) ||
+	   IsEqualIID(riid, &IID_IShellView) ||
+	   IsEqualIID(riid, &IID_IShellView2))
 	{
-	  *ppvObj = This;
-	}
-	else if(IsEqualIID(riid, &IID_IShellView))
-	{
-          *ppvObj = This;
-	}
-	else if(IsEqualIID(riid, &IID_IShellView2))
-	{
-          *ppvObj = This;
+	  *ppvObj = &This->IShellView2_iface;
 	}
 	else if(IsEqualIID(riid, &IID_IShellFolderView))
 	{

dlls/shell32/shlview_cmenu.c

@@ -78,7 +78,7 @@ static HRESULT WINAPI ContextMenu_QueryInterface(IContextMenu3 *iface, REFIID ri
         IsEqualIID(riid, &IID_IContextMenu2) ||
         IsEqualIID(riid, &IID_IContextMenu3))
     {
-        *ppvObj = This;
+        *ppvObj = &This->IContextMenu3_iface;
     }
     else if (IsEqualIID(riid, &IID_IShellExtInit))  /*IShellExtInit*/
     {