Dereference after null check

Either the check against null is unnecessary, or there may be a null pointer dereference. Pointer is checked against null but then dereferenced anyway
/src/reconcile/rec_visibility.c:688: FORWARD_NULL 121581 Comparing "upd" to null implies that "upd" might be null.
/src/reconcile/rec_visibility.c:691: FORWARD_NULL 121581 Dereferencing null pointer "upd".