Fix IndexOutOfBound exception

Bug: 5011243
Change-Id: Iaaafa50b42e5155e3682132217d3e079a170ed89
diff --git a/java/src/com/android/inputmethod/latin/CandidateView.java b/java/src/com/android/inputmethod/latin/CandidateView.java
index 54c4303..96225f2 100644
--- a/java/src/com/android/inputmethod/latin/CandidateView.java
+++ b/java/src/com/android/inputmethod/latin/CandidateView.java
@@ -245,7 +245,12 @@
             mTexts.clear();
             for (int i = 0; i < count; i++) {
                 final CharSequence suggestion = suggestions.getWord(i);
-                if (suggestion == null) continue;
+                if (suggestion == null) {
+                    // Skip an empty suggestion, but we need to add a place-holder for it in order
+                    // to avoid an exception in the loop in updateSuggestions().
+                    mTexts.add("");
+                    continue;
+                }
 
                 final boolean isAutoCorrect = suggestions.mHasMinimalSuggestion
                         && ((i == 1 && !suggestions.mTypedWordValid)