MOD: modified serialization example to correctly use the loaded network

src/examples/network_serialization.cpp

@@ -123,12 +123,12 @@ int main() {
     std::cout << "--------------------------------------------------------------------------------------------------------------------------------------------" <<std::endl;
     error = 0.0;
     inp = {0, 1};
-    net.eval_single( inp, out );
+    net2.eval_single( inp, out );
     error += (0.5 - out[0]) * (0.5 - out[0]);
     std::cout << "x = (0,   1), expected output: 0.50, real output: " << out[0] << std::endl;
 
     inp = {1, 0.5};
-    net.eval_single( inp, out );
+    net2.eval_single( inp, out );
     error += (0.75 - out[0]) * (0.75 - out[0]);
     std::cout << "x = (1, 0.5), expected output: 0.75, real output: " << out[0] << std::endl;
     std::cout << "Error of the network: " << 0.5 * error << std::endl;