Extensions/Layers: Potential memory over-read?

[aquilinum0]

I may have missed something, but while investigating how you implemented sending extension/layer data to vkCreateInstance when I noticed a potential memory bug

alimer/src/Alimer.Graphics/Vulkan/Ut8StringArray.cs

Line 28 in f7df7f3

_data[i] = (byte*)NativeMemory.Alloc(size);

NativeMemory.Alloc does not zero bytes after allocation. Writing n - 1 bytes here doesn't guarantee a \0 terminating character

You could use NativeMemory.AllocZeroed or set the last byte to be \0