[wasm] Add guard regions to end of WebAssembly.Memory buffers

test/debugger/debugger.status

 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 [
 [ALWAYS, {
   # Issue 3660: Replacing activated TurboFan frames by unoptimized code does
   # not work, but we expect it to not crash.
   'debug/debug-step-turbofan': [PASS, FAIL],
 }],  # ALWAYS
@@ skipping 23 matching lines @@
 
 ##############################################################################
 ['gc_stress == True', {
   # Async function tests taking too long
   # https://bugs.chromium.org/p/v8/issues/detail?id=5411
   'debug/harmony/async-debug-caught-exception-cases0': [SKIP],
   'debug/harmony/async-debug-caught-exception-cases1': [SKIP],
   'debug/harmony/async-debug-caught-exception-cases2': [SKIP],
   'debug/harmony/async-debug-caught-exception-cases3': [SKIP],
 }],  # 'gc_stress == True'
+
+##############################################################################
+['variant == asm_wasm', {
+  '*': [SKIP],
+}],  # variant == asm_wasm
+
+##############################################################################
+['variant == wasm_traps', {
+  '*': [SKIP],
+}],  # variant == wasm_traps
+
 ]