u3: fixes u3i_slab_grow()
@@ -49,7 +49,7 @@ _ci_slab_grow(u3i_slab* sab_u, c3_w len_w)
c3_w* old_w = (void*)sab_u->_._vat_u;
// XX implement a more efficient u3a_wealloc()
//
- c3_w* nov_w = u3a_wealloc(old_w, len_w);
+ c3_w* nov_w = u3a_wealloc(old_w, len_w + c3_wiseof(u3a_atom));
u3a_atom* vat_u = (void *)nov_w;
vat_u->len_w = len_w;
