Program: 15446
Project: 15446
Buggy source:
public static void onLinkClicked(Activity activity,String url,boolean forceNoImage){
  if (!forceNoImage) {
    final String imageUrl=getImageUrl(url);
    if (imageUrl != null) {
      final Intent intent=new Intent(activity,ImageViewActivity.class);
      intent.setData(Uri.parse(imageUrl));
      activity.startActivity(intent);
      return;
    }
  }
  final Matcher redditCommentsMatcher=redditCommentsPattern.matcher(url);
  if (redditCommentsMatcher.find()) {
    final Intent intent=new Intent(activity,CommentListingActivity.class);
    intent.putExtra("String_Node_Str",redditCommentsMatcher.group(2));
    activity.startActivity(intent);
    return;
  }
  final Matcher redditUserMatcher=redditUserPattern.matcher(url);
  if (redditUserMatcher.find()) {
    UserProfileDialog.newInstance(redditUserMatcher.group(2)).show(activity);
    return;
  }
  final Matcher redditSubredditMatcher=subredditPattern.matcher(url);
  if (redditSubredditMatcher.find()) {
    final String subredditUrl=redditSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  final Matcher shortSubredditMatcher=shortSubredditPattern.matcher(url);
  if (shortSubredditMatcher.find()) {
    final String subredditUrl="String_Node_Str" + shortSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  if (youtubePattern.matcher(url).matches()) {
    final Intent intent=new Intent(Intent.ACTION_VIEW);
    intent.setData(Uri.parse(url));
    activity.startActivity(intent);
  }
 else {
    final Intent intent=new Intent(activity,WebViewActivity.class);
    intent.putExtra("String_Node_Str",url);
    activity.startActivity(intent);
  }
}

Fixed version (ground truth):
public static void onLinkClicked(Activity activity,String url,boolean forceNoImage){
  if (!forceNoImage) {
    final String imageUrl=getImageUrl(url);
    if (imageUrl != null) {
      final Intent intent=new Intent(activity,ImageViewActivity.class);
      intent.setData(Uri.parse(imageUrl));
      activity.startActivity(intent);
      return;
    }
  }
  final Matcher redditCommentsMatcher=redditCommentsPattern.matcher(url);
  if (redditCommentsMatcher.find()) {
    final Intent intent=new Intent(activity,CommentListingActivity.class);
    intent.putExtra("String_Node_Str",redditCommentsMatcher.group(2));
    activity.startActivity(intent);
    return;
  }
  final Matcher redditUserMatcher=redditUserPattern.matcher(url);
  if (redditUserMatcher.find()) {
    UserProfileDialog.newInstance(redditUserMatcher.group(2)).show(activity);
    return;
  }
  final Matcher redditSubredditMatcher=subredditPattern.matcher(url);
  if (redditSubredditMatcher.find()) {
    final String subredditUrl=redditSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  final Matcher shortSubredditMatcher=shortSubredditPattern.matcher(url);
  if (shortSubredditMatcher.find()) {
    final String subredditUrl="String_Node_Str" + shortSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  if (youtubePattern.matcher(url).matches() || vimeoPattern.matcher(url).matches()) {
    final Intent intent=new Intent(Intent.ACTION_VIEW);
    intent.setData(Uri.parse(url));
    activity.startActivity(intent);
  }
 else {
    final Intent intent=new Intent(activity,WebViewActivity.class);
    intent.putExtra("String_Node_Str",url);
    activity.startActivity(intent);
  }
}