Tiny refactoring (A73)

If !mWordComposer.isComposingWord(), then mWordComposer.getTypedWord()
will always return an empty string.

Change-Id: Ife66d0abc44c743cbc30d31724e833cda168fd5c
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index f2dc976..62d4778 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -1674,17 +1674,15 @@
             return;
         }
 
-        final CharSequence typedWord;
+        final String typedWord = mWordComposer.getTypedWord();
         final SuggestedWords suggestions;
         if (!mWordComposer.isComposingWord()) {
             if (!mCurrentSettings.mBigramPredictionEnabled) {
                 setPunctuationSuggestions();
                 return;
             }
-            typedWord = "";
             suggestions = updateBigramPredictions();
         } else {
-            typedWord = mWordComposer.getTypedWord();
             suggestions = updateSuggestions(typedWord);
         }