Make whether or not a Code object should be created by masm explicit

test/cctest/test-code-stubs-x64.cc

Index: test/cctest/test-code-stubs-x64.cc
diff --git a/test/cctest/test-code-stubs-x64.cc b/test/cctest/test-code-stubs-x64.cc
index 191ce0f50a15ea5702cf817c17ea95f7dc37546e..df0c3244f31e49890f3644e13bdfdeb0764e1fbc 100644
--- a/test/cctest/test-code-stubs-x64.cc
+++ b/test/cctest/test-code-stubs-x64.cc
@@ -54,7 +54,7 @@ ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
       Assembler::kMinimalBufferSize, &actual_size, true));
   CHECK(buffer);
   HandleScope handles(isolate);
-  MacroAssembler assm(isolate, buffer, static_cast<int>(actual_size));
+  MacroAssembler assm(isolate, buffer, static_cast<int>(actual_size), true);
   int offset =
     source_reg.is(rsp) ? 0 : (HeapNumber::kValueOffset - kSmiTagSize);
   DoubleToIStub stub(isolate, source_reg, destination_reg, offset, true);