replace array comprehension with fill()

[nilshg]

So this one I will close based on pure stylistic preference - I somehow always read fill as though it would be filling s.no_comps here, so find the array comprehension slightly clearer. Performance seems to be the same:

julia> using BenchmarkTools

julia> @btime fill(1e-5, 10);
  44.386 ns (1 allocation: 160 bytes)

julia> @btime fill(1e-5, 100);
  108.841 ns (1 allocation: 896 bytes)

julia> @btime fill(1e-5, 1000);
  968.800 ns (1 allocation: 7.94 KiB)

julia> @btime [1e-5 for _ ∈ 1:10];
  46.384 ns (1 allocation: 160 bytes)

julia> @btime [1e-5 for _ ∈ 1:100];
  112.104 ns (1 allocation: 896 bytes)

julia> @btime [1e-5 for _ ∈ 1:1000];
  984.000 ns (1 allocation: 7.94 KiB)