[meld] gutterrendererchunk: Don't draw backgrounds for empty insert chunks

[Kai Willadsen <kaiw src gnome org>]

commit d942089edce209c408ba7c4f0c3fa6d08e2f9b47
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Oct 2 09:39:33 2016 +1000

    gutterrendererchunk: Don't draw backgrounds for empty insert chunks

 meld/gutterrendererchunk.py |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/meld/gutterrendererchunk.py b/meld/gutterrendererchunk.py
index 1dd0ca6..5948990 100644
--- a/meld/gutterrendererchunk.py
+++ b/meld/gutterrendererchunk.py
@@ -101,7 +101,9 @@ class MeldGutterRenderer(object):
             chunk = self.linediffer.get_chunk(
                 chunk_index, self.from_pane, self.to_pane)
 
-            if self.props.view.current_chunk_check(chunk):
+            if chunk[1] == chunk[2]:
+                background_rgba = get_background_rgba(self)
+            elif self.props.view.current_chunk_check(chunk):
                 background_rgba = self.fill_colors['current-chunk-highlight']
             else:
                 background_rgba = self.fill_colors[chunk[0]]