(gnus-registry-read): Wrap call to `eieio-persistent-read' with two
arguments in `with-no-warnings', so that older Emacsen don't complain
during byte compilation.
(setq gnus-registry-db
(gnus-registry-fixup-registry
(condition-case nil
- (eieio-persistent-read file 'registry-db)
+ (with-no-warnings
+ (eieio-persistent-read file 'registry-db))
;; Older EIEIO versions do not check the class name.
('wrong-number-of-arguments
(eieio-persistent-read file)))))