Fix display of internal border in child frames on pgtk

* src/pgtkfns.c (Fx_create_frame): Fix child frame border
resource names.
* src/pgtkterm.c (pgtk_clear_under_internal_border): Fix test
for child frames.  (bug#53018)

1 files changed, 2 insertions, 1 deletions

diff --git a/src/pgtkterm.c b/src/pgtkterm.c
index 3093083a82c..736fce09c4a 100644
--- a/src/pgtkterm.c
+++ b/src/pgtkterm.c
@@ -4957,7 +4957,8 @@ void
 pgtk_clear_under_internal_border (struct frame *f)
 {
   if (FRAME_INTERNAL_BORDER_WIDTH (f) > 0
-      && gtk_widget_get_realized (FRAME_GTK_OUTER_WIDGET (f)))
+      && (!FRAME_GTK_OUTER_WIDGET (f)
+          || gtk_widget_get_realized (FRAME_GTK_OUTER_WIDGET (f))))
     {
       int border = FRAME_INTERNAL_BORDER_WIDTH (f);
       int width = FRAME_PIXEL_WIDTH (f);