Use wxCoTaskMemPtr

Use RAII class wxCoTaskMemPtr to manage pointers that must
be freed with ::CoTaskMemFree().

src/msw/taskbarbutton.cpp

@@ -29,6 +29,7 @@
 #include "wx/msw/taskbarbutton.h"
 #include "wx/scopedptr.h"
 #include "wx/msw/private/comptr.h"
+#include "wx/msw/private/cotaskmemptr.h"
 
 #include <shlwapi.h>
 #include <initguid.h>
@@ -498,10 +499,9 @@ wxTaskBarJumpListItem* GetItemFromIShellItem(IShellItem *shellItem)
     wxTaskBarJumpListItem *item =
         new wxTaskBarJumpListItem(NULL, wxTASKBAR_JUMP_LIST_DESTINATION);
 
-    wchar_t *name;
+    wxCoTaskMemPtr<wchar_t> name;
     shellItem->GetDisplayName(SIGDN_FILESYSPATH, &name);
     item->SetFilePath(wxString(name));
-    CoTaskMemFree(name);
     return item;
 }