[gitg/vala] Fixed threading issues with commit model

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

commit 4e21da2ae9f8b5fa6102192358685a0b3b6431a3
Author: Jesse van den Kieboom <jesse vandenkieboom epfl ch>
Date:   Sun Apr 15 14:55:10 2012 +0200

    Fixed threading issues with commit model

 libgitg/gitg-commit-model.vala |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/libgitg/gitg-commit-model.vala b/libgitg/gitg-commit-model.vala
index 87aca7b..aefac70 100644
--- a/libgitg/gitg-commit-model.vala
+++ b/libgitg/gitg-commit-model.vala
@@ -59,7 +59,10 @@ public class CommitModel : Object
 	public void reload()
 	{
 		cancel();
-		walk();
+
+		walk.begin((obj, res) => {
+			walk.end(res);
+		});
 	}
 
 	public uint size()
@@ -126,7 +129,7 @@ public class CommitModel : Object
 		});
 	}
 
-	private void walk()
+	private async void walk()
 	{
 		Ggit.OId[] included = include;
 		Ggit.OId[] excluded = exclude;
@@ -134,6 +137,8 @@ public class CommitModel : Object
 		d_cancellable = new Cancellable();
 		uint limit = this.limit;
 
+		SourceFunc cb = walk.callback;
+
 		ThreadFunc<void*> run = () => {
 			if (d_walker == null)
 			{
@@ -226,12 +231,15 @@ public class CommitModel : Object
 			}
 
 			notify_batch(true);
+
+			cb();
 			return null;
 		};
 
 		try
 		{
 			d_thread = Thread.create<void*>(run, true);
+			yield;
 		}
 		catch
 		{