"if i != len(num_channels_up) - 1" not really needed in "decodernw"

[LiukDiihMieu]

In include/decoder.py, and in the definition of decodernw, there is a if i != len(num_channels_up) - 1 inside the loop. However, as the loop is range(len(num_channels_up)-1), it seems that the condition is always true and the if clause is not really necessary?