CLJS-1979: port CLJ-2043 (fix s/form of s/conformer)

Author: anmonteiro

src/main/cljs/cljs/spec.cljc

@@ -346,8 +346,8 @@
   (possibly converted) value or :cljs.spec/invalid, and returns a
   spec that uses it as a predicate/conformer. Optionally takes a
   second fn that does unform of result of first"
-  ([f] `(spec-impl '~f ~f nil true))
-  ([f unf] `(spec-impl '~f ~f nil true ~unf)))
+  ([f] `(spec-impl '(conformer ~(res &env f)) ~f nil true))
+  ([f unf] `(spec-impl '(conformer ~(res &env f) ~(res &env unf)) ~f nil true ~unf)))
 
 (defmacro fspec
   "takes :args :ret and (optional) :fn kwargs whose values are preds