[gitg/vala] Set correct length after resize

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

commit 431ea91e9d33751ce299ea516b48ec18e87f9bbc
Author: Jesse van den Kieboom <jesse vandenkieboom epfl ch>
Date:   Wed Apr 25 00:16:26 2012 +0200

    Set correct length after resize

 libgitg/gitg-commit-model.vala |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/libgitg/gitg-commit-model.vala b/libgitg/gitg-commit-model.vala
index 27bf1d3..e0994b5 100644
--- a/libgitg/gitg-commit-model.vala
+++ b/libgitg/gitg-commit-model.vala
@@ -253,9 +253,12 @@ public class CommitModel : Object
 				{
 					lock(d_ids)
 					{
+						var oldlen = d_ids.length;
+
 						size *= 2;
 
 						d_ids.resize((int)size);
+						d_ids.length = oldlen;
 					}
 				}