Disallow 'await' in object literal shorthand position

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 2b8e0fb3a6c8869409a51280d1395b15065ee832..08d9e7b2d86b4a5eb1e7a98afa445afe717ff942 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -7860,6 +7860,8 @@ TEST(AsyncAwaitErrors) {
     "var f = async() => await;",
     "var f = async() => { await; };",
 
+    "async function f() { return {await} }",
+
     "var asyncFn = async function*() {}",
     "async function* f() {}",
     "var O = { *async method() {} };",