"Read the overview of GROUP and build the map."
(when (file-exists-p (nnweb-overview-file group))
(nnheader-temp-write nil
- (insert-file-contents (nnweb-overview-file group))
+ (nnheader-insert-file-contents (nnweb-overview-file group))
(goto-char (point-min))
(setq nnweb-hashtb (gnus-make-hashtable
(count-lines (point-min) (point-max))))