[meld] gutterrendererchunk: Make the button prelight fit the line boundaries

[Kai Willadsen <kaiw src gnome org>]

commit 43fe912b32a073fd9b9e2d6a2eaf36737bfea5c6
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Oct 16 08:33:51 2016 +1000

    gutterrendererchunk: Make the button prelight fit the line boundaries

 meld/gutterrendererchunk.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/meld/gutterrendererchunk.py b/meld/gutterrendererchunk.py
index 5df8da3..b8bebbf 100644
--- a/meld/gutterrendererchunk.py
+++ b/meld/gutterrendererchunk.py
@@ -235,7 +235,9 @@ class GutterRendererChunkAction(
 
             button_area = background_area.copy()
             button_area.x += 1
+            button_area.y += 1
             button_area.width -= 2
+            button_area.height -= 2
 
             Gtk.render_background(
                 stylecontext, context, button_area.x, button_area.y,