Fix eval_mteb.py of undefined variables

scripts/eval_mteb.py

@@ -544,9 +544,9 @@ class Wrapper:
 
     def _tokenize(self, sentences: List[str], is_query: bool):
         
-        batch_dict = tokenizer(sentences, max_length=max_length - 1, return_attention_mask=False, padding=False, truncation=True)
-        batch_dict['input_ids'] = [input_ids + [tokenizer.eos_token_id] for input_ids in batch_dict['input_ids']]
-        batch_dict = tokenizer.pad(batch_dict, padding=True, return_attention_mask=True, return_tensors='pt')
+        batch_dict = self.tokenizer(sentences, max_length=self.max_seq_length - 1, return_attention_mask=False, padding=False, truncation=True)
+        batch_dict['input_ids'] = [input_ids + [self.tokenizer.eos_token_id] for input_ids in batch_dict['input_ids']]
+        batch_dict = self.tokenizer.pad(batch_dict, padding=True, return_attention_mask=True, return_tensors='pt')
         batch_dict['is_causal'] = False
         return batch_dict