Unbreak Win64 build (hopefully).

test/cctest/test-ostreams.cc

Index: test/cctest/test-ostreams.cc
diff --git a/test/cctest/test-ostreams.cc b/test/cctest/test-ostreams.cc
index 3d9e2e7f1b52e976f92ff4a499c8fc18bc05aed5..c83f96d4665eb67e1fbdc8bb9c201d3283b86ed1 100644
--- a/test/cctest/test-ostreams.cc
+++ b/test/cctest/test-ostreams.cc
@@ -14,7 +14,8 @@ using namespace v8::internal;
 
 TEST(OStringStreamConstructor) {
   OStringStream oss;
-  CHECK_EQ(0, oss.size());
+  const size_t expected_size = 0;
+  CHECK(expected_size == oss.size());
   CHECK_GT(oss.capacity(), 0);
   CHECK_NE(NULL, oss.data());
   CHECK_EQ("", oss.c_str());
@@ -42,7 +43,7 @@ TEST(OStringStreamGrow) {
       TEST_STRING TEST_STRING TEST_STRING TEST_STRING TEST_STRING
       TEST_STRING TEST_STRING TEST_STRING TEST_STRING TEST_STRING;
   const size_t expected_len = len * repeat;
-  CHECK_EQ(static_cast<int>(expected_len), oss.size());
+  CHECK(expected_len == oss.size());
   CHECK_GT(oss.capacity(), 0);
   CHECK_EQ(0, strncmp(expected, oss.data(), expected_len));
   CHECK_EQ(expected, oss.c_str());