[libdazzle] three-grid: remove unnaccounted for width pixel

[Christian Hergert <chergert src gnome org>]

commit 31b86856fcd404456b7342748ba282e2996c370e
Author: Christian Hergert <chergert redhat com>
Date:   Tue Nov 20 10:19:39 2018 -0800

    three-grid: remove unnaccounted for width pixel
    
    This was just a stop gap while figuring out the previous issue, so we can
    drop it now.

 src/widgets/dzl-three-grid.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/widgets/dzl-three-grid.c b/src/widgets/dzl-three-grid.c
index f93e6d1..d38eb8f 100644
--- a/src/widgets/dzl-three-grid.c
+++ b/src/widgets/dzl-three-grid.c
@@ -219,8 +219,8 @@ dzl_three_grid_get_preferred_width (GtkWidget *widget,
 
   border_width = gtk_container_get_border_width (GTK_CONTAINER (self));
 
-  *min_width = MAX (min_widths[0], min_widths[2]) * 2 + min_widths[1] + margin.left + margin.right + 
(border_width * 2) + (priv->column_spacing * 2) + 1;
-  *nat_width = MAX (nat_widths[0], nat_widths[2]) * 2 + nat_widths[1] + margin.left + margin.right + 
(border_width * 2) + (priv->column_spacing * 2) + 1;
+  *min_width = MAX (min_widths[0], min_widths[2]) * 2 + min_widths[1] + margin.left + margin.right + 
(border_width * 2) + (priv->column_spacing * 2);
+  *nat_width = MAX (nat_widths[0], nat_widths[2]) * 2 + nat_widths[1] + margin.left + margin.right + 
(border_width * 2) + (priv->column_spacing * 2);
 }
 
 static void