[meld] linkmap: Use alpha value for chunk highlight from theme

[Kai Willadsen <kaiw src gnome org>]

commit ff4024ec26d57c8efa6372df0a2c5997ef81e006
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Aug 10 09:05:31 2014 +1000

    linkmap: Use alpha value for chunk highlight from theme

 meld/linkmap.py |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/meld/linkmap.py b/meld/linkmap.py
index ede7e58..56fad3d 100644
--- a/meld/linkmap.py
+++ b/meld/linkmap.py
@@ -112,9 +112,8 @@ class LinkMap(Gtk.DrawingArea):
 
             chunk_idx = self.filediff.linediffer.locate_chunk(left, c[1])[0]
             if chunk_idx == self.filediff.cursor.chunk:
-                h = self.fill_colors['current-chunk-highlight']
-                context.set_source_rgba(
-                    h.red, h.green, h.blue, 0.5)
+                highlight = self.fill_colors['current-chunk-highlight']
+                context.set_source_rgba(*highlight)
                 context.fill_preserve()
 
             context.set_source_rgba(*self.line_colors[c[0]])