message: Initialize buffer and memory with VK_NULL_HANDLE
diff: @@ -23,9 +23,9 @@ namespace vks
  */
  struct Buffer
  {
  - VkBuffer buffer;
  VkDevice device;
  - VkDeviceMemory memory;
  + VkBuffer buffer = VK_NULL_HANDLE;
  + VkDeviceMemory memory = VK_NULL_HANDLE;
  VkDescriptorBufferInfo descriptor;
  VkDeviceSize size = 0;
  VkDeviceSize alignment = 0;
  