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

test/webkit/webkit.status

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 117 matching lines @@
   'fast/js/excessive-comma-usage': [SKIP],
   'run-json-stringify': [SKIP],
 }],  # 'gcov_coverage'
 
 ##############################################################################
 ['variant == asm_wasm', {
   '*': [SKIP],
 }],  # variant == asm_wasm
 
 ##############################################################################
+['variant == wasm_traps', {
+  '*': [SKIP],
+}],  # variant == wasm_traps
+
+##############################################################################
 ]