bug#24697: 25.1; find-lisp-object-file-name may return wrong locations

[Alex]

#+BEGIN_SRC elisp
(defface tab-width
  '((t :foreground "red"))
  "A face with the same name as a variable.")


(find-lisp-object-file-name 'tab-width 'defface)
#+END_SRC

The above results in the symbol 'C-source'. The result should be nil as
the 'tab-width' face was evaluated in *scratch*.

Putting the above definition into an actual file and using `load-file'
does return the proper source location.

#+BEGIN_SRC elisp
(find-lisp-object-file-name 'mapatoms 1)
#+END_SRC

This should return 'C-source' but instead it returns nil.

#+BEGIN_SRC elisp
(find-lisp-object-file-name 'tab-width 1)
#+END_SRC

This should return nil but instead it returns 'C-source'.