Enforce WARN_UNUSED_RESULT attribute on Windows

remoting/host/setup/daemon_controller_delegate_win.cc

Index: remoting/host/setup/daemon_controller_delegate_win.cc
diff --git a/remoting/host/setup/daemon_controller_delegate_win.cc b/remoting/host/setup/daemon_controller_delegate_win.cc
index 053d86755239ec6166325c9f307bcf87ca30ecd7..70267946e134ffe0c1b612929b90055cfebcc9e0 100644
--- a/remoting/host/setup/daemon_controller_delegate_win.cc
+++ b/remoting/host/setup/daemon_controller_delegate_win.cc
@@ -10,6 +10,7 @@
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
+#include "base/macros.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "base/win/scoped_bstr.h"
@@ -81,7 +82,7 @@ bool ReadConfig(const base::FilePath& filename,
     return false;
   }
 
-  value.release();
+  ignore_result(value.release());
   config_out->reset(dictionary);
   return true;
 }