[gtk] label: Simplify ensure_layout()

[Timm Bäder <baedert src gnome org>]

commit 891c37a4cbad0705fa0ffca004d3cfe46885d8e0
Author: Timm Bäder <mail baedert org>
Date:   Wed Feb 28 15:27:48 2018 +0100

    label: Simplify ensure_layout()
    
    use an early return for an already existing layout.

 gtk/gtklabel.c | 70 +++++++++++++++++++++++++++-------------------------------
 1 file changed, 33 insertions(+), 37 deletions(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 33e978676a..086bc6cb0f 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -3335,50 +3335,46 @@ static void
 gtk_label_ensure_layout (GtkLabel *label)
 {
   GtkLabelPrivate *priv = gtk_label_get_instance_private (label);
-  GtkWidget *widget;
+  PangoAlignment align;
   gboolean rtl;
 
-  widget = GTK_WIDGET (label);
-
-  rtl = _gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
-
-  if (!priv->layout)
-    {
-      PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
+  if (priv->layout)
+    return;
 
-      priv->layout = gtk_widget_create_pango_layout (widget, priv->text);
+  align = PANGO_ALIGN_LEFT; /* Quiet gcc */
+  rtl = _gtk_widget_get_direction (GTK_WIDGET (label)) == GTK_TEXT_DIR_RTL;
+  priv->layout = gtk_widget_create_pango_layout (GTK_WIDGET (label), priv->text);
 
-      gtk_label_update_layout_attributes (label);
+  gtk_label_update_layout_attributes (label);
 
-      switch (priv->jtype)
-       {
-       case GTK_JUSTIFY_LEFT:
-         align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
-         break;
-       case GTK_JUSTIFY_RIGHT:
-         align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
-         break;
-       case GTK_JUSTIFY_CENTER:
-         align = PANGO_ALIGN_CENTER;
-         break;
-       case GTK_JUSTIFY_FILL:
-         align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
-         pango_layout_set_justify (priv->layout, TRUE);
-         break;
-       default:
-         g_assert_not_reached();
-       }
+  switch (priv->jtype)
+    {
+    case GTK_JUSTIFY_LEFT:
+      align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
+      break;
+    case GTK_JUSTIFY_RIGHT:
+      align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
+      break;
+    case GTK_JUSTIFY_CENTER:
+      align = PANGO_ALIGN_CENTER;
+      break;
+    case GTK_JUSTIFY_FILL:
+      align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
+      pango_layout_set_justify (priv->layout, TRUE);
+      break;
+    default:
+      g_assert_not_reached();
+    }
 
-      pango_layout_set_alignment (priv->layout, align);
-      pango_layout_set_ellipsize (priv->layout, priv->ellipsize);
-      pango_layout_set_wrap (priv->layout, priv->wrap_mode);
-      pango_layout_set_single_paragraph_mode (priv->layout, priv->single_line_mode);
-      if (priv->lines > 0)
-        pango_layout_set_height (priv->layout, - priv->lines);
+  pango_layout_set_alignment (priv->layout, align);
+  pango_layout_set_ellipsize (priv->layout, priv->ellipsize);
+  pango_layout_set_wrap (priv->layout, priv->wrap_mode);
+  pango_layout_set_single_paragraph_mode (priv->layout, priv->single_line_mode);
+  if (priv->lines > 0)
+    pango_layout_set_height (priv->layout, - priv->lines);
 
-      if (priv->ellipsize || priv->wrap)
-        pango_layout_set_width (priv->layout, gtk_widget_get_width (GTK_WIDGET (label)) * PANGO_SCALE);
-    }
+  if (priv->ellipsize || priv->wrap)
+    pango_layout_set_width (priv->layout, gtk_widget_get_width (GTK_WIDGET (label)) * PANGO_SCALE);
 }
 
 static GtkSizeRequestMode