[gtk+/gtk-3-20] scale: Avoid a crash

[Matthias Clasen <matthiasc src gnome org>]

commit de595bd1c36e6123bb1b453798ab7b645dff6521
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun May 15 14:18:09 2016 -0400

    scale: Avoid a crash
    
    gtk_scale_get_layout was not careful enough, leading to a crash
    when opening the inspector on a scale.

 gtk/gtkscale.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkscale.c b/gtk/gtkscale.c
index 6903f34..61e2275 100644
--- a/gtk/gtkscale.c
+++ b/gtk/gtkscale.c
@@ -1908,12 +1908,11 @@ gtk_scale_get_layout (GtkScale *scale)
 
   priv = scale->priv;
 
-  if (!priv->layout)
+  if (!priv->layout && priv->draw_value)
     {
       int min_layout_width;
 
-      if (priv->draw_value)
-        priv->layout = gtk_widget_create_pango_layout (GTK_WIDGET (scale), NULL);
+      priv->layout = gtk_widget_create_pango_layout (GTK_WIDGET (scale), NULL);
 
       gtk_css_gadget_get_preferred_size (priv->value_gadget,
                                          GTK_ORIENTATION_HORIZONTAL, -1,