int
match_check_list(uschar **listptr, int sep, tree_node **anchorptr,
unsigned int **cache_ptr, int (*func)(void *,uschar *,uschar **,uschar **),
- void *arg, int type, uschar *name, uschar **valueptr)
+ void *arg, int type, const uschar *name, uschar **valueptr)
{
int yield = OK;
unsigned int *original_cache_bits = *cache_ptr;