Use getattr instead of hasattr

Co-authored-by: André Colomb <[email protected]>

Author: sveinse

canopen/sdo/client.py

@@ -786,7 +786,7 @@ def close(self):
         if self.closed:
             return
         super(BlockDownloadStream, self).close()
-        if not hasattr(self, "_initialized"):
+        if not getattr(self, "_initialized", False):
             # Don't do finalization if initialization was not successful
             return
         if not self._done: