Refactor for clarity: I think this is a good case for goto

src/fellow_storage.c

@@ -1611,14 +1611,15 @@ stvfe_mutate(struct worker *wrk, struct objcore *oc)
 	CHECK_OBJ_NOTNULL(oh, OBJHEAD_MAGIC);
 
 	if (oc->refcnt == 1 && !Lck_Trylock(&oh->mtx)) {
-		if (oc->refcnt == 1) {
+		if (oc->refcnt != 1)
+			goto unlock;
+
 		stv = oc_stv(wrk, oc);
 		stvfe = stv_stvfe(stv);
 
-			if (stv != stvfe->memstv) {
 		AZ(retval);
+		if (stv != stvfe->memstv)
 			goto unlock;
-			}
 
 		assert_memstv(stvfe, stv);
 		AN(oc->stobj->priv);
@@ -1633,7 +1634,7 @@ stvfe_mutate(struct worker *wrk, struct objcore *oc)
 		stvfe->stats->c_mem_obj_mutate++;
 		wrk->stats->n_vampireobject++;
 		wrk->stats->n_object--;
-		}
+
 	  unlock:
 		Lck_Unlock(&oh->mtx);
 	}