[PATCH] git.el: Don't reset HEAD in git-amend-file.

Hello.

The current implementation of git-amend-file is a little dangerous.
While git --amend is atomic, git-amend-file is not.

If the user calls it, but doesn't go through with the commit (due to
error or choice), git --reset HEAD^ has been called anyway.

With this patch it doesn't reset the HEAD till the actual commit.


regards,
Nikolaj Schumacher