[gitg] Do not force index changes when amending

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

commit 6a0b35aca16eda60bc4c5465e928b09865485dce
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Sun Jul 7 16:46:49 2013 +0200

    Do not force index changes when amending

 libgitg/gitg-stage.vala |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/libgitg/gitg-stage.vala b/libgitg/gitg-stage.vala
index c8b4259..442fcd0 100644
--- a/libgitg/gitg-stage.vala
+++ b/libgitg/gitg-stage.vala
@@ -320,9 +320,10 @@ public class Stage : Object
                Ggit.OId? ret = null;
 
                bool skip_hooks = (options & StageCommitOptions.SKIP_HOOKS) != 0;
+               bool amend = (options & StageCommitOptions.AMEND) != 0;
 
                yield thread_index((index) => {
-                       if (!has_index_changes())
+                       if (!amend && !has_index_changes())
                        {
                                throw new StageError.NOTHING_TO_COMMIT("Nothing to commit");
                        }
@@ -361,8 +362,6 @@ public class Stage : Object
 
                        Ggit.OId[] parents;
 
-                       var amend = (options & StageCommitOptions.AMEND) != 0;
-
                        if (headoid == null)
                        {
                                parents = new Ggit.OId[] {};