allow local cleanup

diff --git a/skeletons/constr_SEQUENCE_OF.c b/skeletons/constr_SEQUENCE_OF.c
index b99831f..3d526d0 100644
--- a/skeletons/constr_SEQUENCE_OF.c
+++ b/skeletons/constr_SEQUENCE_OF.c
@@ -128,5 +128,7 @@
 	if(!xcan) _i_ASN_TEXT_INDENT(1, ilevel - 1);
 
 	return er;
+cb_failed:
+	_ASN_ENCODE_FAILED;
 }