close the session when closng the model to allow reloading

src/main/java/plugins/danyfel80/tensorflow/v1/Tensorflow1Interface.java

@@ -100,8 +100,6 @@ public class Tensorflow1Interface implements DeepLearningInterface
         
 		// Fill the agnostic output tensors list with data from the inference result
 		outputTensors = fillOutputTensors(resultPatchTensors, outputTensors);
-		// Close the remaining resources
-		session.close();
 		for (org.tensorflow.Tensor<?> tt : inTensors) {
 			tt.close();
 		}
@@ -134,6 +132,7 @@ public class Tensorflow1Interface implements DeepLearningInterface
 	@Override
 	public void closeModel() {
 		sig = null;
+		model.session().close();
 		if (model != null)
 			model.close();
 		model = null;