fix Dagger build funcition if spvec

Author: shashi

src/build_function.jl

@@ -376,7 +376,8 @@ function _build_function(target::JuliaTarget, rhss, args...;
         dagwrap(ex::Expr) = dagwrap(ex, Val(ex.head))
         dagwrap(ex::Expr, ::Val) = ex
         dagwrap(ex::Expr, ::Val{:call}) = :(Dagger.delayed($(ex.args[1]))($(dagwrap.(ex.args[2:end])...)))
-        new_rhss = dagwrap.(conv.(rhss))
+
+        new_rhss = dagwrap.(conv.(Array(rhss)))
         delayed_exprs = build_expr(:block, [:($(Symbol(computevars[i])) = Dagger.delayed(identity)($(new_rhss[i]))) for i in axes(computevars,1)])
         # TODO: treereduce?
         reduce_expr = quote