[OLE32] Do not crash on an invalid / empty clipboard.

CORE-12302

svn path=/trunk/; revision=75617

diff --git a/reactos/dll/win32/ole32/clipboard.c b/reactos/dll/win32/ole32/clipboard.c
index 6ea2d4a..8f526c7 100644 (file)
--- a/reactos/dll/win32/ole32/clipboard.c
+++ b/reactos/dll/win32/ole32/clipboard.c
@@ -2018,6 +2018,10 @@ static LRESULT CALLBACK clipbrd_wndproc(HWND hwnd, UINT message, WPARAM wparam,
     {
     case WM_RENDERFORMAT:
     {
     {
     case WM_RENDERFORMAT:
     {

+#ifdef __REACTOS__
+    if (clipbrd->cached_enum)
+    {
+#endif

         UINT cf = wparam;
         ole_priv_data_entry *entry;
 
         UINT cf = wparam;
         ole_priv_data_entry *entry;
 


@@ -2026,7 +2030,9 @@ static LRESULT CALLBACK clipbrd_wndproc(HWND hwnd, UINT message, WPARAM wparam,
 
         if(entry)
             render_format(clipbrd->src_data, &entry->fmtetc);
 
         if(entry)
             render_format(clipbrd->src_data, &entry->fmtetc);

-
+#ifdef __REACTOS__
+    }
+#endif

         break;
     }
 
         break;
     }