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

test/debugger/debugger.status

Index: test/debugger/debugger.status
diff --git a/test/debugger/debugger.status b/test/debugger/debugger.status
index 4eca6f1c2eacf94ef5a0f44089cff6d969fbf999..ce63166e21d14a03b2a6e92ee6c86995e45ffd43 100644
--- a/test/debugger/debugger.status
+++ b/test/debugger/debugger.status
@@ -24,6 +24,15 @@
 }],  # 'gc_stress == True'
 
 ##############################################################################
+['variant == asm_wasm', {
+  '*': [SKIP],
+}],  # variant == asm_wasm
+
+##############################################################################
+['variant == wasm_traps', {
+  '*': [SKIP],
+}],  # variant == wasm_traps
+
 ['variant == turbofan_opt', {
 
   # TODO(jarin/mstarzinger): Investigate debugger issues with TurboFan.