Fixed training with rand_s()

AlexeyAB

2017-03-14 a71bdd7a83e33f28d91b88551b291627728ee3e7

 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);