[gitg] Run cancel in dispose

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 68cd4a68b332daf4024dd000100c2a002132add7
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Wed Jun 11 14:56:23 2014 +0200

    Run cancel in dispose

 libgitg/gitg-commit-model.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgitg/gitg-commit-model.vala b/libgitg/gitg-commit-model.vala
index 5d342be..7cfcd05 100644
--- a/libgitg/gitg-commit-model.vala
+++ b/libgitg/gitg-commit-model.vala
@@ -125,7 +125,7 @@ namespace Gitg
                        d_sortmode = Ggit.SortMode.TIME | Ggit.SortMode.TOPOLOGICAL;
                }
 
-               ~CommitModel()
+               public override void dispose()
                {
                        cancel();
                }