message: Add missing comparison operator for rdcarray
diff: @@ -1197,6 +1197,10 @@ bool operator==(const VkImageMemoryBarrier &a, const VkImageMemoryBarrier &b)
  {
  return memcmp(&a, &b, sizeof(VkImageMemoryBarrier)) == 0;
  }
  +bool operator<(const VkImageMemoryBarrier &a, const VkImageMemoryBarrier &b)
  +{
  + return memcmp(&a, &b, sizeof(VkImageMemoryBarrier)) < 0;
  +}
  TEST_CASE("Validate CombineDepthStencilLayouts works", "[vulkan]")
  {
  