errors: introduce GIT_EORPHANEDHEAD
diff --git a/include/git2/errors.h b/include/git2/errors.h
index 1c4e910..38b7fe0 100644
--- a/include/git2/errors.h
+++ b/include/git2/errors.h
@@ -27,6 +27,7 @@ enum {
GIT_EBUFS = -6,
GIT_EUSER = -7,
GIT_EBAREREPO = -8,
+ GIT_EORPHANEDHEAD = -9,
GIT_PASSTHROUGH = -30,
GIT_ITEROVER = -31,