Type hints break mocking

[crclark]

(require '[conjure.core :as conjure])
(defn foo [^Object o ^double d ^Object o2] d)
(conjure/mocking [foo] (foo 1 1.2 1))

the above throws:

conjure.core$stub_fn$this__36707 cannot be cast to clojure.lang.IFn$ODOO