Added EBADCHILD error (bad child of parent context).

`Rs' post-checks that all children are proper bibliographic elements.
`Rs' correctly re-orders its children as per groff's output (including %C).

1 files changed, 1 insertions, 0 deletions

diff --git a/libmdoc.h b/libmdoc.h
index 8ce67933..291d6dc0 100644
--- a/libmdoc.h
+++ b/libmdoc.h
@@ -92,6 +92,7 @@ enum	merr {
 	EQUOTPHR,
 	ENOCTX,
 	ELIB,
+	EBADCHILD,
 	MERRMAX
 };