[runtime] Avoid @@isConcatSpreadable lookup for fast path Array.prototype.concat

src/heap/incremental-marking.cc

Index: src/heap/incremental-marking.cc
diff --git a/src/heap/incremental-marking.cc b/src/heap/incremental-marking.cc
index 686c6738821437a1621c4f495391632813ae58e3..5a8d449514cb5e8101792a4a796bf6390a6fa0e9 100644
--- a/src/heap/incremental-marking.cc
+++ b/src/heap/incremental-marking.cc
@@ -932,7 +932,7 @@ void IncrementalMarking::Hurry() {
         MemoryChunk::IncrementLiveBytesFromGC(cache, cache->Size());
       }
     }
-    context = Context::cast(context)->get(Context::NEXT_CONTEXT_LINK);
+    context = Context::cast(context)->next_context_link();
   }
 }