ww: hare-feature batch (_, const, [_]T, ..., size/offset, assert, for-else)

selfhost/cmd/wcc/cgendecl.ww

@@ -33,7 +33,7 @@ fn scanlocals(c: *cgen, n: *node) i32 = {
 		// of the caller. Same-name re-declarations share the first
 		// slot (see scanseenmark / localadd).
 		if (!scanseenmark(c, n.str)) {
-			let sz: i32 = slotsize(c, n.lhs);
+			let sz: i32 = letslotsize(c, n);
 			if (sz < 8) { sz = 8; };
 			if ((sz & 7) != 0) { sz = (sz + 7) & ~7; };
 			total += sz;