Undefined fdef is still present in result of (stest/checkable-syms)

Description

When looking into the code of CLJS-2844, I noticed that there isn't special handling of nil here:
https://github.com/clojure/clojurescript/blob/master/src/main/cljs/cljs/spec/alpha.cljc#L71
This has the result that after undefining a spec, it's still present in the result of (stest/checkable-syms).

Example:

Patch CLJS-3049.patch fixes this and provides a test for it.

Environment

None

Assignee

David Nolen

Reporter

Michiel Borkent

Labels

Approval

Accepted

Patch

Code and Test

Priority

Major
Configure