Fix for test for Win32.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 22b9477c65468316759682897d84646a39ebc21d..3644d7abae6435bc343e69d6407b79b72fb8ae2c 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -8593,7 +8593,7 @@ THREADED_TEST(QuietSignalingNaNs) {
     } else {
       uint64_t stored_bits = DoubleToBits(stored_number);
       // Check if quiet nan (bits 51..62 all set).
-      CHECK_EQ(0xfff, (stored_bits >> 51) & 0xfff);
+      CHECK_EQ(0xfff, static_cast<int>((stored_bits >> 51) & 0xfff));
     }
 
     // Check that Date::New preserves non-NaNs in the date range and
@@ -8606,7 +8606,7 @@ THREADED_TEST(QuietSignalingNaNs) {
     } else {
       uint64_t stored_bits = DoubleToBits(stored_date);
       // Check if quiet nan (bits 51..62 all set).
-      CHECK_EQ(0xfff, (stored_bits >> 51) & 0xfff);
+      CHECK_EQ(0xfff, static_cast<int>((stored_bits >> 51) & 0xfff));
     }
   }
 }