test: Add missing convert_to_json_for_cli

Author: MarcoFalke

test/functional/wallet_reorgsrestore.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2019-2022 The Bitcoin Core developers
+# Copyright (c) 2019-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -104,7 +104,7 @@ def test_reorg_handling_during_unclean_shutdown(self):
 
         # Disconnect tip and sync wallet state
         tip = wallet.getbestblockhash()
-        tip_height = wallet.getblockstats(tip)["height"]
+        tip_height = wallet.getblockstats(hash_or_height=self.convert_to_json_for_cli(tip))["height"]
         wallet.invalidateblock(tip)
         wallet.syncwithvalidationinterfacequeue()