Swallow interruption while stopping recognition.

Do not hide InterruptedException and notify the code higher up that
intrruption occured.

git-svn-id: svn+ssh://svn.code.sf.net/p/cmusphinx/code/trunk/pocketsphinx-android@12403 94700074-3cef-4d97-a70e-9c8c206c02f5

src/edu/cmu/pocketsphinx/SpeechRecognizer.java

@@ -95,7 +95,8 @@ public boolean stop() {
             recognizerThread.interrupt();
             recognizerThread.join();
         } catch (InterruptedException e) {
-            throw new IllegalStateException("", e);
+            // Restore the interrupted status.
+            Thread.currentThread().interrupt();
         }
 
         recognizerThread = null;