message: Fix variable shadowing warning on VS2015
diff: @@ -329,7 +329,7 @@ void VulkanReplay::InstallVulkanLayer(bool systemLevel)
  // if we're a 64-bit process, update the 32-bit key
  #if ENABLED(RDOC_X64)
  {
  - HKEY key = GetImplicitLayersKey(true, true);
  + key = GetImplicitLayersKey(true, true);
  if(key)
  {
  