Update normalized.jl

Author: dlfivefifty

src/normalized.jl

@@ -299,6 +299,7 @@ _sum(p::SubQuasiArray{T,1,<:Weighted,<:Tuple{Inclusion,Int}}, ::Colon) where T =
 demap(W::Weighted) = Weighted(demap(W.P))
 basismap(W::Weighted) = basismap(W.P)
 const MappedOPLayouts = Union{MappedOPLayout,WeightedOPLayout{MappedOPLayout}}
+diff_layout(::MappedOPLayouts, A, order::Int; dims...) = diff_layout(MappedBasisLayout(), A, order; dims...)
 diff_layout(::MappedOPLayouts, A, order...; dims...) = diff_layout(MappedBasisLayout(), A, order...; dims...)
 
 diff_layout(::AbstractNormalizedOPLayout, A, order...; dims...) = diff_layout(ApplyLayout{typeof(*)}(), A, order...; dims...)