Fix default child-frame-border-width on PGTK

* src/pgtkfns.c (Fx_create_frame): Make default
`child-frame-border-width' nil.  (bug#55588)

diff --git a/src/pgtkfns.c b/src/pgtkfns.c
index b26709d90c072474ac54efc36dcdb6b944d66926..35e3c10589b23d5a3342e22a14cc3f38440106ce 100644 (file)
--- a/src/pgtkfns.c
+++ b/src/pgtkfns.c
@@ -1437,8 +1437,7 @@ This function is an internal primitive--use `make-frame' instead.  */ )
 
     }
 
-  gui_default_parameter (f, parms, Qchild_frame_border_width,
-                        make_fixnum (0),
+  gui_default_parameter (f, parms, Qchild_frame_border_width, Qnil,
                         "childFrameBorderWidth", "childFrameBorderWidth",
                         RES_TYPE_NUMBER);
   gui_default_parameter (f, parms, Qright_divider_width, make_fixnum (0),