Tell edatas their creation arena immediately.

This avoids having to pass it in anywhere else.

src/base.c

@@ -468,6 +468,7 @@ base_alloc_edata(tsdn_t *tsdn, base_t *base) {
 	if (edata == NULL) {
 		return NULL;
 	}
+	edata_arena_ind_set(edata, ehooks_ind_get(&base->ehooks));
 	edata_esn_set(edata, esn);
 	return edata;
 }