[heap] Fix bad cast in sweeper.cc

Bug: v8:12612, chromium:1364517
Change-Id: Id1e23d0ad0a786a01a432552937e1b6c6494bd9e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3899120Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83255}

src/heap/sweeper.cc

@@ -268,8 +268,8 @@ V8_INLINE size_t Sweeper::FreeAndProcessFreedMemory(
     ZapCode(free_start, size);
   }
   page->heap()->CreateFillerObjectAtSweeper(free_start, static_cast<int>(size));
-  freed_bytes =
-      reinterpret_cast<PagedSpace*>(space)->UnaccountedFree(free_start, size);
+  freed_bytes = reinterpret_cast<PagedSpaceBase*>(space)->UnaccountedFree(
+      free_start, size);
   if (should_reduce_memory_) page->DiscardUnusedMemory(free_start, size);
 
   return freed_bytes;