Fix lex -equiv

[djblue]

In portal, I have cljc files with code that contain deftypes with -equiv protocol methods. Even though they are part of :cljs reader conditional branches, they still need to be lexed and parsed.

Before

% jank repl
user=> '-equiv
─ lex/invalid-number ───────────────────────────────────────────────────────────────────────────────
error: Extraneous 'e' found in number.                                                              
                                                                                                    
─────┬──────────────────────────────────────────────────────────────────────────────────────────────
     │ /tmp/jank-repl-ZWd35c                                                                        
─────┼──────────────────────────────────────────────────────────────────────────────────────────────
  1  │ '-equiv                                                                                      
     │   ^ Found 'e' here.                                                                          
─────┴──────────────────────────────────────────────────────────────────────────────────────────────

After

% jank repl    
user=> '-equiv
-equiv
user=> (type '-equiv)
"symbol"

[jeaye]

Thanks!