Fixed broken copy constructor and assignment operator of con_, which became

broken about an hour ago.  Oops.

dlib/dnn/layers.h

@@ -118,6 +118,7 @@ namespace dlib
             weight_decay_multiplier(item.weight_decay_multiplier),
             bias_learning_rate_multiplier(item.bias_learning_rate_multiplier),
             bias_weight_decay_multiplier(item.bias_weight_decay_multiplier),
+            num_filters_(item.num_filters_),
             padding_y_(item.padding_y_),
             padding_x_(item.padding_x_)
         {
@@ -143,6 +144,7 @@ namespace dlib
             weight_decay_multiplier = item.weight_decay_multiplier;
             bias_learning_rate_multiplier = item.bias_learning_rate_multiplier;
             bias_weight_decay_multiplier = item.bias_weight_decay_multiplier;
+            num_filters_ = item.num_filters_;
             return *this;
         }