[gtksourceview] GutterRendererPixbuf: fix LAST alignment

[Sébastien Wilmet <swilmet src gnome org>]

commit b22640343b0d3f260dab45d88e765ba66a3531d3
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Jan 22 07:07:50 2017 +1000

    GutterRendererPixbuf: fix LAST alignment
    
    Prior to this, FIRST and LAST were equivalent, because the starting y
    coordinate was based on the cell, not the line.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777587

 gtksourceview/gtksourcegutterrendererpixbuf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutterrendererpixbuf.c b/gtksourceview/gtksourcegutterrendererpixbuf.c
index 8df2f61..6648267 100644
--- a/gtksourceview/gtksourcegutterrendererpixbuf.c
+++ b/gtksourceview/gtksourcegutterrendererpixbuf.c
@@ -70,7 +70,7 @@ center_on (GtkSourceGutterRenderer *renderer,
        gtk_text_view_get_iter_location (view, iter, &location);
 
        *x = cell_area->x + (cell_area->width - width) * xalign;
-       *y = cell_area->y + (location.height - height) * yalign;
+       *y = location.y + (location.height - height) * yalign;
 }
 
 static void