(diary-face-attrs): Fix custom :type.

(diary-face-attrs): Fix custom :type.
(diary-face-attrs, diary-glob-file-regexp-prefix, diary-unknown-time)
(diary-pull-attrs, diary-header-line-flag, diary-list-entries)
(diary-unhide-everything, include-other-diary-files, diary-goto-entry)
(mark-included-diary-files, mark-calendar-days-named)
(mark-calendar-date-pattern, mark-calendar-month, diary-entry-compare)
(diary-remind, insert-diary-entry, insert-weekly-diary-entry)
(insert-monthly-diary-entry, insert-yearly-diary-entry)
(insert-anniversary-diary-entry, insert-block-diary-entry)
(insert-cyclic-diary-entry, fancy-diary-font-lock-keywords)
(diary-font-lock-sexps): Doc fixes.
(diary-remind-message, mark-calendar-month): Use zerop.
(diary-attrtype-convert, diary-pull-attrs): Simplify.
(diary-list-entries): Revert let to let* (previous change).