* lib/wordsplit.c (alloc_space, wsplt_assign_var, expvar) (wordsplit_tildexpand, wordsplit_pathexpand) (wordsplit_get_words): Use ialloc API on idx_t args.
* lib/wordsplit.c (alloc_space, wsplt_assign_var, expvar) (wordsplit_tildexpand, wordsplit_pathexpand) (wordsplit_get_words): Use ialloc API on idx_t args.