Change raw IWSCProduct COM pointer to ComPtr to ensure instance is not

leaked.

This change fixes a leak of a IWSCProduct instance in
FillAntiVirusProductsFromWSC.

Bug: 1043532

Change-Id: I3c501f833b5a37b240c6de0350f6d304a2a34f40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2009382Reviewed-by: Patrick Monette <pmonette@chromium.org>
Commit-Queue: Chris Davis <chrdavis@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#733528}

chrome/services/util_win/av_products.cc

@@ -145,7 +145,7 @@ internal::ResultCode FillAntiVirusProductsFromWSC(
     return internal::ResultCode::kFailedToGetProductCount;
 
   for (LONG i = 0; i < product_count; i++) {
-    IWscProduct* product = nullptr;
+    Microsoft::WRL::ComPtr<IWscProduct> product;
     result = product_list->get_Item(i, &product);
     if (FAILED(result))
       return internal::ResultCode::kFailedToGetItem;