Ensure OLE is initialized in wxFileName::GetShortcutTarget().

If it isn't, the function doesn't risk to work. This is especially pernicious
because OLE is initialized on startup in GUI applications, but not in the
console ones only using wxBase, so this function can, completely unexpectedly,
give different results in them.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77508 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/filename.cpp

@@ -102,6 +102,7 @@
     #include "wx/msw/private.h"
     #include <shlobj.h>         // for CLSID_ShellLink
     #include "wx/msw/missing.h"
+    #include "wx/msw/ole/oleutils.h"
 #endif
 
 #if defined(__WXMAC__)
@@ -1661,6 +1662,9 @@ bool wxFileName::GetShortcutTarget(const wxString& shortcutPath,
     if (ext.CmpNoCase(wxT("lnk"))!=0)
         return false;
 
+    // Ensure OLE is initialized.
+    wxOleInitializer oleInit;
+
     // create a ShellLink object
     hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
                             IID_IShellLink, (LPVOID*) &psl);