Minor fix: warning-message if in labels class_id >= classes in cfg-file

AlexeyAB

2018-05-22 768b190b10e61932d78547e44aa9475ae950e409

 src/voxel.c

@@ -5,6 +5,11 @@

#ifdef OPENCV
#include "opencv2/highgui/highgui_c.h"
#include "opencv2/core/version.hpp"
#ifndef CV_VERSION_EPOCH
#include "opencv2/videoio/videoio_c.h"
#endif
image get_image_from_stream(CvCapture *cap);
#endif

void extract_voxel(char *lfile, char *rfile, char *prefix)