void *mutt_hcache_fetch (void *db, const char *filename,
size_t (*keylen) (const char *fn));
int mutt_hcache_store (void *db, const char *filename, HEADER * h,
- uint64_t uid_validity,
+ unsigned long uid_validity,
size_t (*keylen) (const char *fn));
int mutt_hcache_delete (void *db, const char *filename,
size_t (*keylen) (const char *fn));