[test] Make CHECK_EQ calls in cctest consistent.

test/cctest/test-code-layout.cc

 // 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.
 
 #include "src/factory.h"
 #include "src/isolate.h"
 #include "src/objects.h"
 // FIXME(mstarzinger, marja): This is weird, but required because of the missing
 // (disallowed) include: src/factory.h -> src/objects-inl.h
 #include "src/objects-inl.h"
@@ skipping 24 matching lines @@
   code_desc.reloc_size = 0;
   code_desc.origin = nullptr;
   code_desc.unwinding_info = nullptr;
   code_desc.unwinding_info_size = 0;
 
   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
       code_desc, 0, Handle<Object>::null());
 
   CHECK(!code->has_unwinding_info());
   CHECK_EQ(code->instruction_size(), buffer_size);
-  CHECK_EQ(memcmp(code->instruction_start(), buffer, buffer_size), 0);
+  CHECK_EQ(0, memcmp(code->instruction_start(), buffer, buffer_size));
   CHECK_EQ(code->instruction_end() - reinterpret_cast<byte*>(*code),
            Code::kHeaderSize + buffer_size - kHeapObjectTag);
 }
 
 TEST(CodeLayoutWithUnwindingInfo) {
   CcTest::InitializeVM();
   HandleScope handle_scope(CcTest::i_isolate());
 
   // "Hello, World!" in ASCII.
   byte buffer_array[13] = {0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20,
@@ skipping 16 matching lines @@
   code_desc.reloc_size = 0;
   code_desc.origin = nullptr;
   code_desc.unwinding_info = unwinding_info;
   code_desc.unwinding_info_size = unwinding_info_size;
 
   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
       code_desc, 0, Handle<Object>::null());
 
   CHECK(code->has_unwinding_info());
   CHECK_EQ(code->instruction_size(), buffer_size);
-  CHECK_EQ(memcmp(code->instruction_start(), buffer, buffer_size), 0);
+  CHECK_EQ(0, memcmp(code->instruction_start(), buffer, buffer_size));
   CHECK(IsAligned(code->GetUnwindingInfoSizeOffset(), 8));
   CHECK_EQ(code->unwinding_info_size(), unwinding_info_size);
   CHECK(
       IsAligned(reinterpret_cast<uintptr_t>(code->unwinding_info_start()), 8));
   CHECK_EQ(
       memcmp(code->unwinding_info_start(), unwinding_info, unwinding_info_size),
       0);
   CHECK_EQ(code->unwinding_info_end() - reinterpret_cast<byte*>(*code),
            Code::kHeaderSize + RoundUp(buffer_size, kInt64Size) + kInt64Size +
                unwinding_info_size - kHeapObjectTag);
 }