sqlitepager_set_destructor  719 ext/sqlite/libsqlite/src/btree.c   sqlitepager_set_destructor(pBt->pPager, pageDestructor);
sqlitepager_set_destructor   75 ext/sqlite/libsqlite/src/pager.h void sqlitepager_set_destructor(Pager*, void(*)(void*));