[libhandy] stackable-box: Skip children with 0 size

[Adrien Plazas <aplazas src gnome org>]

commit cb7b63d2bdec2a63c80859747189e9bb5c898f17
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri Jun 12 19:12:14 2020 +0500

    stackable-box: Skip children with 0 size
    
    Specifically, non-revealed revealers.
    
    Signed-off-by: Alexander Mikhaylenko <alexm gnome org>

 src/hdy-stackable-box.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/hdy-stackable-box.c b/src/hdy-stackable-box.c
index 56020304..dd64e091 100644
--- a/src/hdy-stackable-box.c
+++ b/src/hdy-stackable-box.c
@@ -2053,6 +2053,9 @@ hdy_stackable_box_size_allocate (HdyStackableBox *self,
       if (!child_info->widget)
         continue;
 
+      if (child_info->nat.width <= 0)
+        continue;
+
       nat_box_size += child_info->nat.width;
       nat_max_size = MAX (nat_max_size, child_info->nat.width);
       visible_children++;
@@ -2069,6 +2072,9 @@ hdy_stackable_box_size_allocate (HdyStackableBox *self,
       if (!child_info->widget)
         continue;
 
+      if (child_info->nat.height <= 0)
+        continue;
+
       nat_box_size += child_info->nat.height;
       nat_max_size = MAX (nat_max_size, child_info->nat.height);
       visible_children++;