Matt, this is a valid regression relative to 1.10.339. It should involve a new JIRA ticket.

I am seeing some more unexpected behaviour with `instrument` and varargs, when `:static-fns` is enabled.

With the following repl:
```
clj -Srepro -Sdeps '{:deps {org.clojure/clojurescript {:mvn/version "1.10.439"} org.clojure/test.check {:mvn/version "RELEASE"}}}' -m cljs.main -co '{:static-fns true}' -re node -r
```

and code:
```
(require '[clojure.spec.alpha :as s])
(require '[clojure.spec.test.alpha :as st])

(defn defk
[key & [doc]]
key)

(s/fdef defk
:args (s/cat :key keyword?
:doc (s/? string?)))

(st/instrument)

(defk 1 1)
```

The last line should throw, but doesn't, if `:static-fns` is enabled.

fixed https://github.com/clojure/clojurescript/commit/4fb83eff87cc456600a3fd21c111e99a41c61285

CLJS-2793-2.patch passes f and ret into the macros (instead of employing ~'f and ~'ret).

First pass I think this looks ok, but lets just pass `ret` instead of capturing it in the macro. I had some trouble following at first because of that.