[An extra null pointer check is not needed in a function](https://isocpp.org/wiki/faq/freestore-mgmt#delete-handles-null "Do I need to check for null before delete p?") like [the destructor for the class “ot_data_t_buffer_cpu”](https://github.com/griegler/octnet/blob/2406d4c1efaa0051d54ebb8de7b22f1190ad55b1/core/include/octnet/cpu/buffer.h#L43 "Update candidate").
