Fix VS2005 build.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 153e3359462f7213fbc4bc3f322cc97af23423bd..26bebce766427039cef513011c72f3e0e7cc2174 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -4984,8 +4984,8 @@ void LCodeGen::EmitDeepCopy(Handle<JSObject> object,
           Handle<FixedDoubleArray>::cast(elements);
       for (int i = 0; i < elements_length; i++) {
         int64_t value = double_array->get_representation(i);
-        int32_t value_low = value & 0xFFFFFFFF;
-        int32_t value_high = value >> 32;
+        int32_t value_low = static_cast<int32_t>(value & 0xFFFFFFFF);
+        int32_t value_high = static_cast<int32_t>(value >> 32);
         int total_offset =
             elements_offset + FixedDoubleArray::OffsetOfElementAt(i);
         __ mov(FieldOperand(result, total_offset), Immediate(value_low));