bug#25847: 26.0.50; Error completing help with nil entries in load-history

[Glenn Morris]

Version: 26.1

Yuri D'Elia wrote:

> (defun test () "" nil) ;; insert text in buffer *scratch*
> C-M-x ;; eval-defun (adds an entry to load-history with null file)
> C-h f package- TAB ;; crashes

Thanks; fixed in ebb1050.

> This is caused by `help--loaded-p' not handling nil entries, introduced
> in 0c31ff43b6880c84498fbe1f06e1e5809b55e838.

I don't see what that commit has to do with it.