fixed bug: rand() for batches of images

AlexeyAB

2017-01-10 b831db5e58ad37c8f4adf39de7fb5db204209a1c

 src/captcha.c

@@ -28,7 +28,6 @@

void train_captcha(char *cfgfile, char *weightfile)
{
    data_seed = time(0);
    srand(time(0));
    float avg_loss = -1;
    char *base = basecfg(cfgfile);