Fix build due to Ib4c472756f

Change-Id: I27aad91d3f821b5c0d6a3c6405b4a9d03c5bd814
diff --git a/java/src/com/android/inputmethod/latin/settings/Settings.java b/java/src/com/android/inputmethod/latin/settings/Settings.java
index f09f386..a0c8ec0 100644
--- a/java/src/com/android/inputmethod/latin/settings/Settings.java
+++ b/java/src/com/android/inputmethod/latin/settings/Settings.java
@@ -422,7 +422,7 @@
     }
 
     public void writeUsePersonalizationDictionary(final boolean enabled) {
-        mPrefs.edit().putBoolean(PREF_USE_PERSONALIZED_DICTS, enabled).apply();
+        mPrefs.edit().putBoolean(PREF_KEY_USE_PERSONALIZED_DICTS, enabled).apply();
     }
 
     public static void writeEmojiRecentKeys(final SharedPreferences prefs, String str) {