pbio/sys/light_matrix: Fix crash on unfinished boot animation.

If we start a program on boot, the startup animation isn't finished. If we start the run animation then, we get a crash on running pbio_light_animation_stop_all after running the user program.

Plenty of time wasted on this one. There is nothing wrong with the MicroPython exception handler. Thank you for reading.

Author: laurensvalk

lib/pbio/sys/light_matrix.c

@@ -166,6 +166,7 @@ void pbsys_hub_light_matrix_handle_user_program_start(void) {
     // The user animation updates only a subset of pixels to save time,
     // so the rest must be cleared before it starts.
     pbsys_hub_light_matrix_user_program_animation_clear();
+    pbio_light_animation_stop_all();
     pbio_light_animation_init(&pbsys_hub_light_matrix->animation, pbsys_hub_light_matrix_user_program_animation_next);
     pbio_light_animation_start(&pbsys_hub_light_matrix->animation);
 }