Corresponding to TBR of Id2b0b974

This is follow up change of Id2b0b974fffdf6f09ee1828e957b973d2ce1c315
Bug: 2959169

Change-Id: Ie47db5fce7937a4d70c432ab76510d0dc3f68401
diff --git a/java/src/com/android/inputmethod/latin/ProximityKeyDetector.java b/java/src/com/android/inputmethod/latin/ProximityKeyDetector.java
index eaaed91..408e4e1 100644
--- a/java/src/com/android/inputmethod/latin/ProximityKeyDetector.java
+++ b/java/src/com/android/inputmethod/latin/ProximityKeyDetector.java
@@ -35,8 +35,8 @@
 
     @Override
     public int getKeyIndexAndNearbyCodes(int x, int y, int[] allKeys) {
-        int touchX = getTouchX(x);
-        int touchY = getTouchY(y);
+        final int touchX = getTouchX(x);
+        final int touchY = getTouchY(y);
         final Key[] keys = mKeys;
         if (keys == null)
             throw new IllegalStateException("keyboard isn't set");