Removes C++20-style designated initializers from adapter_impl_comparison_test.cc.

PiperOrigin-RevId: 442930693

quiche/http2/adapter/adapter_impl_comparison_test.cc

diff --git a/quiche/http2/adapter/adapter_impl_comparison_test.cc b/quiche/http2/adapter/adapter_impl_comparison_test.cc
index cf2b598..cce014b 100644
--- a/quiche/http2/adapter/adapter_impl_comparison_test.cc
+++ b/quiche/http2/adapter/adapter_impl_comparison_test.cc
@@ -17,7 +17,8 @@
       NgHttp2Adapter::CreateClientAdapter(nghttp2_visitor);
 
   RecordingHttp2Visitor oghttp2_visitor;
-  OgHttp2Adapter::Options options{.perspective = Perspective::kClient};
+  OgHttp2Adapter::Options options;
+  options.perspective = Perspective::kClient;
   std::unique_ptr<OgHttp2Adapter> oghttp2_adapter =
       OgHttp2Adapter::Create(oghttp2_visitor, options);
 
@@ -43,7 +44,8 @@
       NgHttp2Adapter::CreateServerAdapter(nghttp2_visitor);
 
   RecordingHttp2Visitor oghttp2_visitor;
-  OgHttp2Adapter::Options options{.perspective = Perspective::kServer};
+  OgHttp2Adapter::Options options;
+  options.perspective = Perspective::kServer;
   std::unique_ptr<OgHttp2Adapter> oghttp2_adapter =
       OgHttp2Adapter::Create(oghttp2_visitor, options);