master ca6899a0ef: Fix default child-frame-border-width on PGTK

[Po Lu]

branch: master
commit ca6899a0efb3ec4ca945fe8412d59e57bc0afa7d
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Fix default child-frame-border-width on PGTK
    
    * src/pgtkfns.c (Fx_create_frame): Make default
    `child-frame-border-width' nil.  (bug#55588)
---
 src/pgtkfns.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/pgtkfns.c b/src/pgtkfns.c
index b26709d90c..35e3c10589 100644
--- 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),