[torque] fix MSVC compile

Change-Id: I4f610400eab6e24fb7eb06465ca9abc63d20fdb2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2182474Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67593}

src/torque/types.cc

@@ -616,7 +616,8 @@ std::vector<ObjectSlotKind> ClassType::ComputeHeaderSlotKinds() const {
   std::vector<ObjectSlotKind> result;
   std::vector<Field> header_fields = ComputeHeaderFields();
   ComputeSlotKindsHelper(&result, 0, header_fields);
-  DCHECK_EQ(std::ceil(double{header_size()} / TargetArchitecture::TaggedSize()),
+  DCHECK_EQ(std::ceil(static_cast<double>(header_size()) /
+                      TargetArchitecture::TaggedSize()),
             result.size());
   return result;
 }