get rid of sql finalizer error messages.

Change-Id: I5613734b78f861237b435079742528b9623c97de

apps/Tag/src/com/android/apps/tag/TagDBHelper.java

@@ -137,6 +137,7 @@ public class TagDBHelper extends SQLiteOpenHelper {
         stmt.bindString(1, new String(msg.toByteArray())); // TODO: This should be a blob
         stmt.bindString(2, new Date().toString());
         stmt.executeInsert();
+        stmt.close();
     }
 
     @Override