revert back the lvalue casting; fix is even less compatible

diff --git a/skeletons/constr_SEQUENCE_OF.c b/skeletons/constr_SEQUENCE_OF.c
index 773fdd0..f126d78 100644
--- a/skeletons/constr_SEQUENCE_OF.c
+++ b/skeletons/constr_SEQUENCE_OF.c
@@ -25,7 +25,7 @@
 	/*
 	 * Gather the length of the underlying members sequence.
 	 */
-	list = (A_SEQUENCE_OF(void) *)ptr;
+	(void *)list = ptr;
 	for(edx = 0; edx < list->count; edx++) {
 		void *memb_ptr = list->array[edx];
 		erval = elm->type->der_encoder(elm->type, memb_ptr,
@@ -102,7 +102,7 @@
 
 	er.encoded = 0;
 
-	list = (A_SEQUENCE_OF(void) *)sptr;
+	(void *)list = sptr;
 	for(i = 0; i < list->count; i++) {
 		asn_enc_rval_t tmper;