Fixed batch stuff in conv layer

src/network.c

@@ -274,7 +274,7 @@ float calculate_error_network(network net, float *truth)
         //printf("%5.2f %5.2f, ", out[i], truth[i]);
         //if(i == get_network_output_size(net)) printf("\n");
         delta[i] = truth[i] - out[i];
-        //printf("%f, ", delta[i]);
+        //printf("%.10f, ", out[i]);
         sum += delta[i]*delta[i];
     }
     //printf("\n");