Bastien Montagne
d617de965e
When called with very small range, `BLI_task_parallel_range_ex()` would generate a zero `chunk_size`, leading to some infinite looping in `parallel_range_func` due to `parallel_range_next_iter_get` returning true without actually increasing the counter! So now, we ensure `chunk_size` and `num_tasks` are always at least 1 (and avoid generating too much tasks too).