[gtk+] Only count visible children during size request

[Matthias Clasen <matthiasc src gnome org>]

commit e2ba86289f7524a174a8e5e27801585cacb0169a
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Mar 5 23:25:35 2011 -0500

    Only count visible children during size request
    
    This was causing spacing between image and label to be requested
    in buttons, even though the image is invisible.

 gtk/gtkbox.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkbox.c b/gtk/gtkbox.c
index 1ff75eb..f508173 100644
--- a/gtk/gtkbox.c
+++ b/gtk/gtkbox.c
@@ -1164,7 +1164,7 @@ gtk_box_compute_size_for_orientation (GtkBox *box,
   gint           largest_child = 0, largest_natural = 0;
 
   for (children = private->children; children != NULL;
-       children = children->next, nvis_children++)
+       children = children->next)
     {
       GtkBoxChild *child = children->data;
 
@@ -1190,6 +1190,8 @@ gtk_box_compute_size_for_orientation (GtkBox *box,
 
 	  required_size    += child_size;
 	  required_natural += child_natural;
+
+          nvis_children += 1;
         }
     }