winex11: Don't disallow replacing unowned formats.

dlls/user32/tests/clipboard.c

@@ -93,7 +93,6 @@ static void set_clipboard_data_process( int arg )
         todo_wine_if( arg == 1 || arg == 3 )
         ok( IsClipboardFormatAvailable( CF_WAVE ), "process %u: CF_WAVE not available\n", arg );
         ret = SetClipboardData( CF_WAVE, GlobalAlloc( GMEM_DDESHARE | GMEM_ZEROINIT, 100 ));
-        todo_wine_if( arg == 2 || arg == 4 )
         ok( ret != 0, "process %u: SetClipboardData failed err %u\n", arg, GetLastError() );
     }
     else

dlls/winex11.drv/clipboard.c

@@ -3013,26 +3013,9 @@ void CDECL X11DRV_EmptyClipboard(void)
  */
 BOOL CDECL X11DRV_SetClipboardData(UINT wFormat, HANDLE hData, BOOL owner)
 {
-    DWORD flags = 0;
-    BOOL bResult = TRUE;
+    if (!owner) X11DRV_CLIPBOARD_UpdateCache();
 
-    /* If it's not owned, data can only be set if the format data is not already owned */
-    if (!owner)
-    {
-        LPWINE_CLIPDATA lpRender;
-
-        X11DRV_CLIPBOARD_UpdateCache();
-
-        if (((lpRender = X11DRV_CLIPBOARD_LookupData(wFormat)) &&
-            !(lpRender->wFlags & CF_FLAG_UNOWNED)))
-            bResult = FALSE;
-        else
-            flags = CF_FLAG_UNOWNED;
-    }
-
-    bResult &= X11DRV_CLIPBOARD_InsertClipboardData(wFormat, hData, flags, NULL, TRUE);
-
-    return bResult;
+    return X11DRV_CLIPBOARD_InsertClipboardData(wFormat, hData, 0, NULL, TRUE);
 }