[speech-to-text] Fix IndexOutOfBounds when result Index is greater than

results. #205

Author: germanattanasio

src/main/java/com/ibm/watson/developer_cloud/speech_to_text/v1/model/SpeechResults.java

@@ -73,7 +73,7 @@ public void setResults(final List<Transcript> results) {
    * @return true, if the results are final
    */
   public boolean isFinal() {
-    return (results != null && results.get(resultIndex) != null && results.get(resultIndex)
+    return (results != null && resultIndex < results.size() && results.get(resultIndex) != null && results.get(resultIndex)
         .isFinal());
   }
 }