[gtksourceview] StyleScheme: add FIXME comment about corners styling

[Sébastien Wilmet <swilmet src gnome org>]

commit b44e11f4efa23fd8750dda887849837507be5dee
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Mar 26 18:43:41 2016 +0100

    StyleScheme: add FIXME comment about corners styling

 gtksourceview/gtksourcestylescheme.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcestylescheme.c b/gtksourceview/gtksourcestylescheme.c
index b9da919..ea638de 100644
--- a/gtksourceview/gtksourcestylescheme.c
+++ b/gtksourceview/gtksourcestylescheme.c
@@ -946,6 +946,9 @@ generate_css_style (GtkSourceStyleScheme *scheme)
 
                /* For the corners if the top or bottom gutter is also
                 * displayed.
+                * FIXME: this shouldn't be necessary, GTK+ should apply the
+                * border style to the corners too, see:
+                * https://bugzilla.gnome.org/show_bug.cgi?id=764239
                 */
                append_css_style (final_style, style, "textview");
        }