Exit with nonzero status on error

Bartek Gąsiorzewski

2018-05-07 ae4ec1a06d5b4c9bcb5647cf555aafd4e5f800f7

 build/darknet/x64/yolo-voc.cfg

@@ -256,3 +256,4 @@
absolute=1
thresh = .6
random=1