[heap] Fix rescanning live objects when aborting compaction.

src/heap/spaces.h

Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index 6df3fe7876cf42baccbc2d7097e20ba59a6c31b4..7bc3d109606af44f9e06275b983df6f89471fc5b 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -327,6 +327,10 @@ class MemoryChunk {
     // still has to be performed.
     PRE_FREED,
 
+    // |COMPACTION_WAS_ABORTED|: Indicates that the compaction in this page
+    //   has been aborted and needs special handling by the sweeper.
+    COMPACTION_WAS_ABORTED,
+
     // Last flag, keep at bottom.
     NUM_MEMORY_CHUNK_FLAGS
   };