correct nothing

Author: ChrisRackauckas

src/default.jl

@@ -7,7 +7,7 @@ function defaultalg(A::DiffEqArrayOperator, b, assumptions::OperatorAssumptions{
     defaultalg(A.A, b, assumptions)
 end
 
-function defaultalg(A, b, ::OperatorAssumptions{nothing})
+function defaultalg(A, b, ::OperatorAssumptions{Nothing})
     issquare = size(A, 1) == size(A, 2)
     defaultalg(A, b, OperatorAssumptions(Val(issquare)))
 end