layers: Fix WIN32 build
layers: Fix WIN32 build

Fix a uint64_t to VkImage reinterpret_cast for 32-bit VS2013.  I
Missed this when reviewing the previous change.

Change-Id: I4a0865ab546b45792b8f4d841f6c6c04ff22501b

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools