Fixed memory leaks for Yolo: train, test

AlexeyAB

2018-05-23 ec68838342b42541776607b0c14e40fb89f7e3d8

 cfg/darknet19_448.cfg

@@ -1,6 +1,8 @@
[net]
batch=128
subdivisions=4
#batch=128
#subdivisions=4
batch=1
subdivisions=1
height=448
width=448
max_crop=512