vec->maxsize = init_size ? init_size : VEC_INIT_SIZE;
bytes = vec->maxsize * sizeof (char *);
vec->strs = mh_xmalloc (bytes);
vec->maxsize = init_size ? init_size : VEC_INIT_SIZE;
bytes = vec->maxsize * sizeof (char *);
vec->strs = mh_xmalloc (bytes);