Fix NPE in isCandidateStripVisible()

Change-Id: I03d3c4806b51e7f902c43887a6769bffbffeccaf

java/src/com/android/inputmethod/latin/LatinIME.java

@@ -1452,6 +1452,8 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
     }
 
     private boolean isCandidateStripVisible() {
+        if (mCandidateView == null)
+            return false;
         if (mCandidateView.isShowingAddToDictionaryHint() || TextEntryState.isCorrecting())
             return true;
         if (!isShowingSuggestionsStrip())