Symbols in package export are not matched against symbols in defuns

For example as reported by exercism.lol the submission:

```lisp
(defpackage :socks-and-sexprs
(:use :cl)
(:export :lennys-favorite-food :lennys-secret-keyword
:is-an-atom-p :is-a-cons-p :first-thing :rest-of-it))

(in-package :socks-and-sexprs)

;; Evaluates to some symbol (not a keyword)
(defun lennys-favorite-food () 'wild)

;; Evaluates to some keyword
(defun lennys-secret-keyword () :stuff)

;; Evaluates to T if THING is an atom, NIL otherwise
(defun is-an-atom-p (thing) (atom thing))

;; Evaluates to T if THING is a cons, NIL otherwise
(defun is-a-cons-p (thing) (consp thing))

;; Evaluates to the first part of CONS
(defun first-thing (cons) (car cons))

;; Evaluates to the 'rest' of the CONS
(defun rest-of-it (cons) (cdr cons))
```

Is represented as:

```lisp
((DEFPACKAGE :SOCKS-AND-SEXPRS-0
(:EXPORT :SOCKS-AND-SEXPRS-1
:SOCKS-AND-SEXPRS-2
:SOCKS-AND-SEXPRS-3
:SOCKS-AND-SEXPRS-4
:SOCKS-AND-SEXPRS-5
:SOCKS-AND-SEXPRS-6)
(:USE :SOCKS-AND-SEXPRS-7))
(IN-PACKAGE :SOCKS-AND-SEXPRS-0)
(DEFUN :SOCKS-AND-SEXPRS-8
((:REQUIRED NIL) (:OPTIONAL NIL) (:REST NIL) (:KEYWORD NIL) (:AUX NIL)
(:ALLOW-OTHER-KEYS NIL))
(:DOCSTRING NIL)
(:DECLARE NIL)
('WILD))
(DEFUN :SOCKS-AND-SEXPRS-9
((:REQUIRED NIL) (:OPTIONAL NIL) (:REST NIL) (:KEYWORD NIL) (:AUX NIL)
(:ALLOW-OTHER-KEYS NIL))
(:DOCSTRING NIL)
(:DECLARE NIL)
(:STUFF))
(DEFUN :SOCKS-AND-SEXPRS-10
((:REQUIRED (:SOCKS-AND-SEXPRS-11)) (:OPTIONAL NIL) (:REST NIL)
(:KEYWORD NIL) (:AUX NIL) (:ALLOW-OTHER-KEYS NIL))
(:DOCSTRING NIL)
(:DECLARE NIL)
((ATOM :SOCKS-AND-SEXPRS-11)))
(DEFUN :SOCKS-AND-SEXPRS-12
((:REQUIRED (:SOCKS-AND-SEXPRS-11)) (:OPTIONAL NIL) (:REST NIL)
(:KEYWORD NIL) (:AUX NIL) (:ALLOW-OTHER-KEYS NIL))
(:DOCSTRING NIL)
(:DECLARE NIL)
((CONSP :SOCKS-AND-SEXPRS-11)))
(DEFUN :SOCKS-AND-SEXPRS-13
((:REQUIRED (:SOCKS-AND-SEXPRS-14)) (:OPTIONAL NIL) (:REST NIL)
(:KEYWORD NIL) (:AUX NIL) (:ALLOW-OTHER-KEYS NIL))
(:DOCSTRING NIL)
(:DECLARE NIL)
((CAR :SOCKS-AND-SEXPRS-14)))
(DEFUN :SOCKS-AND-SEXPRS-15
((:REQUIRED (:SOCKS-AND-SEXPRS-14)) (:OPTIONAL NIL) (:REST NIL)
(:KEYWORD NIL) (:AUX NIL) (:ALLOW-OTHER-KEYS NIL))
(:DOCSTRING NIL)
(:DECLARE NIL)
((CDR :SOCKS-AND-SEXPRS-14))))
```

Note the exported symbols in the DEFPACKAGE are not matching those in the DEFUNs below.