message: Don't return NULL on error, we must always return a valid trace
diff: @@ -1581,6 +1581,8 @@ ShaderDebugTrace *VulkanReplay::DebugPixel(uint32_t eventId, uint32_t x, uint32_
  {
  RDCLOG("Didn't get any valid hit to debug");
  delete apiWrapper;
  +
  + ret = new ShaderDebugTrace;
  }
  if(descpool != VK_NULL_HANDLE)
  