Avoid bad visual errors in thread_selection_wnd().

dlls/x11drv/clipboard.c

diff --git a/dlls/x11drv/clipboard.c b/dlls/x11drv/clipboard.c
index 8e42bc9..3527b1a 100644
--- a/dlls/x11drv/clipboard.c
+++ b/dlls/x11drv/clipboard.c
@@ -329,7 +329,7 @@
     {
         wine_tsx11_lock();
         w = XCreateWindow(thread_display(), root_window, 0, 0, 1, 1, 0, screen_depth,
-            InputOutput, visual, 0, NULL);
+                          InputOutput, CopyFromParent, 0, NULL);
         wine_tsx11_unlock();
 
         if (w)