layers: don't memset layer data in get_my_data_ptr
layers: don't memset layer data in get_my_data_ptr

get_my_data_ptr was zeroing data after using new.
It should leave the layer data as its constructor set it.

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