Update sync_index.js

test/harness/sync_index.js

diff --git a/test/harness/sync_index.js b/test/harness/sync_index.js
index a56e5e3..db301c6 100644
--- a/test/harness/sync_index.js
+++ b/test/harness/sync_index.js
@@ -124,7 +124,7 @@
         global_f32: 666.6,
         global_f64: 666.6,
         table: new WebAssembly.Table({initial: 10, maximum: 20, element: 'anyfunc'}),
-        table64: new WebAssembly.Table({initial: 10, maximum: 20, element: 'anyfunc', address: "i64"}),
+        table64: new WebAssembly.Table({initial: 10n, maximum: 20n, element: 'anyfunc', address: "i64"}),
         memory: new WebAssembly.Memory({initial: 1, maximum: 2})
     };
     let handler = {