Clean up int types in the Dictionary class

Change-Id: I49821c00186ce2a282bb23f369eb140b47d6c455
diff --git a/native/jni/src/dictionary.h b/native/jni/src/dictionary.h
index dd97e9a..e966000 100644
--- a/native/jni/src/dictionary.h
+++ b/native/jni/src/dictionary.h
@@ -50,11 +50,11 @@
             bool useFullEditDistance, int *outWords, int *frequencies, int *spaceIndices,
             int *outputTypes) const;
 
-    int getBigrams(const int32_t *word, int length, int *codes, int codesSize, int *outWords,
+    int getBigrams(const int *word, int length, int *codes, int codesSize, int *outWords,
             int *frequencies, int *outputTypes) const;
 
-    int getFrequency(const int32_t *word, int length) const;
-    bool isValidBigram(const int32_t *word1, int length1, const int32_t *word2, int length2) const;
+    int getFrequency(const int *word, int length) const;
+    bool isValidBigram(const int *word1, int length1, const int *word2, int length2) const;
     const uint8_t *getDict() const { // required to release dictionary buffer
         return mDict;
     }