Merge pull request #50 from janbruedigam/zero_dim_mul_fix

Fix zero dim matrix mulitply

Author: janbruedigam

src/util/custom_static.jl

@@ -63,4 +63,5 @@ zerodimstaticadjoint(A) = A'
 zerodimstaticadjoint(::SMatrix{0,N,T,0}) where {T,N} = SMatrix{N,0,T,0}()
 zerodimstaticadjoint(::SMatrix{N,0,T,0}) where {T,N} = SMatrix{0,N,T,0}()
 Base.:*(x::LinearAlgebra.AdjointAbsVec, A::SMatrix{0,N,T,0}) where {T,N} = (zerodimstaticadjoint(A)*x')'
-Base.:*(A::SMatrix{N,0,T,0},x::SVector{0}) where {T,N} = szeros(T,N)
+Base.:*(A::SMatrix{N,0,T,0},x::SVector{0}) where {T,N} = szeros(T,N)
+Base.:*(A::SMatrix{N,0,T,0},B::SMatrix{0,M,T,0}) where {T,N,M} = szeros(T,N,M)