Program: 14202
Project: 14202
Buggy source:
/** 
 * delete multiple comments
 */
private static void deleteComments(final int accountId,final CommentList comments,final OnCommentsModeratedListener actionListener){
  final Blog blog=WordPress.getBlog(accountId);
  if (blog == null || comments == null || comments.size() == 0) {
    if (actionListener != null)     actionListener.onCommentsModerated(new CommentList());
    return;
  }
  final CommentList deletedComments=new CommentList();
  final int localBlogId=blog.getLocalTableBlogId();
  final int remoteBlogId=blog.getRemoteBlogId();
  final Handler handler=new Handler();
  new Thread(){
    @Override public void run(){
      XMLRPCClientInterface client=XMLRPCFactory.instantiate(blog.getUri(),blog.getHttpuser(),blog.getHttppassword());
      for (      Comment comment : comments) {
        Object[] params={remoteBlogId,blog.getUsername(),blog.getPassword(),comment.commentID};
        Object result;
        try {
          result=client.call(ApiHelper.Methods.DELETE_COMMENT,params);
          boolean success=(result != null && Boolean.parseBoolean(result.toString()));
          if (success)           deletedComments.add(comment);
        }
 catch (        XMLRPCException e) {
          AppLog.e(T.COMMENTS,"String_Node_Str",e);
        }
catch (        IOException e) {
          AppLog.e(T.COMMENTS,"String_Node_Str",e);
        }
catch (        XmlPullParserException e) {
          AppLog.e(T.COMMENTS,"String_Node_Str",e);
        }
      }
      CommentTable.deleteComments(localBlogId,deletedComments);
      if (actionListener != null) {
        handler.post(new Runnable(){
          @Override public void run(){
            actionListener.onCommentsModerated(deletedComments);
          }
        }
);
      }
    }
  }
.start();
}

Fixed version (ground truth):
/** 
 * delete multiple comments
 */
private static void deleteComments(final int accountId,final CommentList comments,final OnCommentsModeratedListener actionListener){
  final Blog blog=WordPress.getBlog(accountId);
  if (blog == null || comments == null || comments.size() == 0) {
    if (actionListener != null)     actionListener.onCommentsModerated(new CommentList());
    return;
  }
  final CommentList deletedComments=new CommentList();
  final int localBlogId=blog.getLocalTableBlogId();
  final int remoteBlogId=blog.getRemoteBlogId();
  final Handler handler=new Handler();
  new Thread(){
    @Override public void run(){
      XMLRPCClientInterface client=XMLRPCFactory.instantiate(blog.getUri(),blog.getHttpuser(),blog.getHttppassword());
      for (      Comment comment : comments) {
        Object[] params={remoteBlogId,blog.getUsername(),blog.getPassword(),comment.commentID};
        Object result;
        try {
          result=client.call(Method.DELETE_COMMENT,params);
          boolean success=(result != null && Boolean.parseBoolean(result.toString()));
          if (success)           deletedComments.add(comment);
        }
 catch (        XMLRPCException e) {
          AppLog.e(T.COMMENTS,"String_Node_Str",e);
        }
catch (        IOException e) {
          AppLog.e(T.COMMENTS,"String_Node_Str",e);
        }
catch (        XmlPullParserException e) {
          AppLog.e(T.COMMENTS,"String_Node_Str",e);
        }
      }
      CommentTable.deleteComments(localBlogId,deletedComments);
      if (actionListener != null) {
        handler.post(new Runnable(){
          @Override public void run(){
            actionListener.onCommentsModerated(deletedComments);
          }
        }
);
      }
    }
  }
.start();
}