Support of .ppm files is realised

AlexeyAB

2018-05-17 fb9fcfb3ba0057b1196d1b95fd53cdb0b874b1c3

 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);