Update base/abstractarraymath.jl

Co-authored-by: Neven Sajko <s@purelymail.com>

base/abstractarraymath.jl

@@ -158,7 +158,7 @@ function _insertdims(A::AbstractArray{T, N}, dims::Tuple{Vararg{Int64, M}}) wher
     issorted(dims) || throw(ArgumentError("dims=$(dims) are not sorted"))
 
     # n is the amount of the dims already inserted
-    ax_n = Base._foldoneto(((ds, n, dims), _) -> 
+    ax_n = Base._foldoneto(((ds, n, dims), _) ->
                              dims != Tuple(()) && n == first(dims) ? 
                              ((ds..., Base.OneTo(1)), n, Base.tail(dims)) : 
                              ((ds..., axes(A,n)), n+1, dims),