Reviewed scan python code

files/gvm_library.py

@@ -98,6 +98,7 @@ class Target:
     
     def __del__(self):
         self.delete()
+        self.port_list.delete()
         
     def delete(self):
         res = self.client.delete_target(self.id)
@@ -176,6 +177,7 @@ class Task:
     
     def __del__(self):
         self.delete()
+        self.target.delete()
     
     def update_status(self):
         tasks_info = self.client.get_tasks(filter_string = self.id)