validate palette color count and group scale

Author: FoamyGuy

shared-bindings/displayio/Group.c

@@ -56,7 +56,7 @@ STATIC mp_obj_t displayio_group_make_new(const mp_obj_type_t *type, size_t n_arg
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
 
-    mp_int_t scale = mp_arg_validate_int_min(args[ARG_scale].u_int, 1, MP_QSTR_scale);
+    mp_int_t scale = mp_arg_validate_int_range(args[ARG_scale].u_int, 1, 32767,MP_QSTR_scale);
 
     displayio_group_t *self = m_new_obj(displayio_group_t);
     self->base.type = &displayio_group_type;

shared-bindings/displayio/Palette.c

@@ -58,7 +58,7 @@ STATIC mp_obj_t displayio_palette_make_new(const mp_obj_type_t *type, size_t n_a
 
     displayio_palette_t *self = m_new_obj(displayio_palette_t);
     self->base.type = &displayio_palette_type;
-    common_hal_displayio_palette_construct(self, args[ARG_color_count].u_int);
+    common_hal_displayio_palette_construct(self, mp_arg_validate_int_range(args[ARG_color_count].u_int, 1, 32767, MP_QSTR_color_count));
 
     return MP_OBJ_FROM_PTR(self);
 }