Fix multi-token character decoding for Qwen2

Author: turboderp

exllamav2/generator/dynamic.py

@@ -2001,12 +2001,12 @@ def emit(
 
         # Hold text if it contains an incomplete character
 
-        if self.held_text.endswith("�") and not self.held_text.endswith("�����"):
+        if 1 <= self.held_text.count("�") < 5:
             test_decode = self.generator.tokenizer.decode(
                 self.held_tokens.torch(),
                 decode_special_tokens = self.decode_special_tokens
             )[0]
-            if not test_decode.endswith("�"):
+            if not "�" in test_decode:
                 self.held_text = test_decode
             else:
                 return emit(results)