[gitg] Use same callbacks instance during remote connection life cycle

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

commit 2971ffd28cfe356193fa523cad578379195410d2
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Mon Aug 29 19:32:33 2016 +0200

    Use same callbacks instance during remote connection life cycle

 libgitg/gitg-remote.vala |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/libgitg/gitg-remote.vala b/libgitg/gitg-remote.vala
index 6637312..9c2e5a5 100644
--- a/libgitg/gitg-remote.vala
+++ b/libgitg/gitg-remote.vala
@@ -123,6 +123,8 @@ public class Remote : Ggit.Remote
        private uint d_reset_transfer_progress_timeout;
        private double d_transfer_progress;
 
+       private Callbacks? d_callbacks;
+
        public signal void tip_updated(string refname, Ggit.OId a, Ggit.OId b);
 
        public override void dispose()
@@ -246,12 +248,16 @@ public class Remote : Ggit.Remote
                {
                        try
                        {
+                               d_callbacks = new Callbacks(this, callbacks, update_transfer_progress);
+
                                yield Async.thread(() => {
-                                       base.connect(direction, new Callbacks(this, callbacks, null), null);
+                                       base.connect(direction, d_callbacks, null);
                                });
                        }
                        catch (Error e)
                        {
+                               d_callbacks = null;
+
                                // NOTE: need to check the message for now in case of failed
                                // http or ssh auth. This is fragile and will likely break
                                // in future libgit2 releases. Please fix!
@@ -320,15 +326,13 @@ public class Remote : Ggit.Remote
                {
                        yield Async.thread(() => {
                                var options = new Ggit.FetchOptions();
-                               var cbs = new Callbacks(this, callbacks, update_transfer_progress);
-
-                               options.set_remote_callbacks(cbs);
+                               options.set_remote_callbacks(d_callbacks);
 
                                base.download(null, options);
 
                                if (message != null)
                                {
-                                       base.update_tips(cbs, true, options.get_download_tags(), message);
+                                       base.update_tips(d_callbacks, true, options.get_download_tags(), 
message);
                                }
                        });
                }