[gtksourceview: 13/13] gutter: fix warnings

[Sébastien Wilmet <swilmet src gnome org>]

commit 4f50e167b0f03e707ea99e8c9e900961debb1a94
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Aug 9 17:19:06 2015 +0200

    gutter: fix warnings

 gtksourceview/gtksourcegutter.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutter.c b/gtksourceview/gtksourcegutter.c
index 42e1cac..9b8d2cc 100644
--- a/gtksourceview/gtksourcegutter.c
+++ b/gtksourceview/gtksourcegutter.c
@@ -959,6 +959,9 @@ apply_style (GtkSourceGutter *gutter,
                        class = GTK_STYLE_CLASS_LEFT;
                        break;
 
+               case GTK_TEXT_WINDOW_PRIVATE:
+               case GTK_TEXT_WINDOW_WIDGET:
+               case GTK_TEXT_WINDOW_TEXT:
                default:
                        g_return_if_reached ();
        }