Fix dnn caffe importer extract blobs from reused layers

modules/dnn/src/caffe/caffe_importer.cpp

@@ -278,11 +278,13 @@ public:
         int li;
         for (li = 0; li != netBinary.layer_size(); li++)
         {
-            if (netBinary.layer(li).name() == name)
+            const caffe::LayerParameter& binLayer = netBinary.layer(li);
+            // Break if the layer name is the same and the blobs are not cleared
+            if (binLayer.name() == name && binLayer.blobs_size() != 0)
                 break;
         }
 
-        if (li == netBinary.layer_size() || netBinary.layer(li).blobs_size() == 0)
+        if (li == netBinary.layer_size())
             return;
 
         caffe::LayerParameter* binLayer = netBinary.mutable_layer(li);