symbol_darknet19.py batchnorm layers use_global_stats problems

[jacky4323]

Hi,

in symbol/symbol_darknet19.py,there is some batchnorm layers
and I notice that use_global_stats should be True when demo or inference. But in the demo.py I didn't see use_global_stats set to be True. Did I make a mistake? thanks.

conv = mx.symbol.BatchNorm(data=conv, name="bn_{}".format(name))