Merge commit 'refs/pull/72/head' of github.com:libgit2/git2go

Conflicts:
	git.go
	wrapper.c

1 files changed, 4 insertions, 0 deletions

diff --git a/git.go b/git.go
index 2afbfaa..48ffeee 100644
--- a/git.go
+++ b/git.go
@@ -89,6 +89,10 @@ const (
 	ErrIterOver = C.GIT_ITEROVER
 )
 
+var (
+	ErrInvalid = errors.New("Invalid state for operation")
+)
+
 func init() {
 	C.git_threads_init()
 }