fix: let error message will apear

ipa/ipa.py

@@ -57,7 +57,7 @@ def get_ipa(raw_text: str, dialect: str) -> tuple[str, str, str, list[str]]:
             final_missing_words.extend(missing_words)
 
     if len(final_ipa) == 0 or len(final_missing_words) > 0:
-        return final_words, final_ipa, final_pinyin, missing_words
+        return final_words, final_ipa, final_pinyin, final_missing_words
 
     final_words = " ".join(final_words).replace(" ， ", "，")
     final_ipa = " ".join(final_ipa).replace(" ， ", "，")