reinterpret doesn't handle singleton types

[maleadt]

julia> a = CuArray{Nothing}(undef, 1)
1-element CuArray{Nothing, 1, CUDA.Mem.DeviceBuffer}:
 nothing

julia> reinterpret(Missing, a)
ERROR: DivideError: integer division error
Stacktrace:
 [1] div
   @ ./int.jl:288 [inlined]
 [2] _derived_array
   @ ~/Julia/pkg/CUDA/src/array.jl:779 [inlined]
 [3] reinterpret(#unused#::Type{Missing}, a::CuArray{Nothing, 1, CUDA.Mem.DeviceBuffer})
   @ CUDA ~/Julia/pkg/CUDA/src/array.jl:803
 [4] top-level scope
   @ REPL[6]:1
 [5] top-level scope
   @ ~/Julia/pkg/CUDA/src/initialization.jl:155