Issue title: 设置单选照片时，当设置最大选择9张，选择之后排版，再点击右上角删除出现崩溃
 Issue body: 崩溃位置
```
+ (void)getSelectedListResultModel:(NSArray<HXPhotoModel *> *)selectedList complete:(void (^)(NSArray<HXPhotoResultModel *> *, NSArray<HXPhotoResultModel *> *, NSArray<HXPhotoResultModel *> *))complete {
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        NSMutableArray *models = [NSMutableArray array];
        NSMutableArray *photos = [NSMutableArray array];
        NSMutableArray *videos = [NSMutableArray array];
        for (HXPhotoModel *photoModel in selectedList) {
            HXPhotoResultModel *resultModel = [[HXPhotoResultModel alloc] init];
            resultModel.index = photoModel.endCollectionIndex;
            if (photoModel.asset) {
                if (photoModel.subType == HXPhotoModelMediaSubTypeVideo) {
                    if ([photoModel.avAsset isKindOfClass:[AVURLAsset class]]) {
                        AVURLAsset *urlAsset = (AVURLAsset *)photoModel.avAsset;
                        resultModel.videoURL = urlAsset.URL;
                    }
                    resultModel.type = HXPhotoResultModelMediaTypeVideo;
                    resultModel.videoIndex = photoModel.videoIndex;
                }else {
                    resultModel.photoIndex = photoModel.endIndex;
                    resultModel.type = HXPhotoResultModelMediaTypePhoto;
                }
                resultModel.avAsset = photoModel.avAsset;
                PHContentEditingInputRequestOptions *options = [[PHContentEditingInputRequestOptions alloc] init];
                options.networkAccessAllowed = NO;
                __weak typeof(self) weakSelf = self;
                [photoModel.asset requestContentEditingInputWithOptions:options completionHandler:^(PHContentEditingInput * _Nullable contentEditingInput, NSDictionary * _Nonnull info) {
                    BOOL error = [info objectForKey:PHContentEditingInputErrorKey];
                    //            BOOL cloud = [[info objectForKey:PHContentEditingInputResultIsInCloudKey] boolValue];
                    BOOL cancel = [[info objectForKey:PHContentEditingInputCancelledKey] boolValue];
                    
                    if (!error && !cancel && contentEditingInput) {
                        resultModel.fullSizeImageURL = contentEditingInput.fullSizeImageURL;
                        if (resultModel.type == HXPhotoResultModelMediaTypePhoto) {
                            resultModel.displaySizeImage = contentEditingInput.displaySizeImage;
                        }else {
                            resultModel.displaySizeImage = photoModel.thumbPhoto;
                        }
                        resultModel.fullSizeImageOrientation = contentEditingInput.fullSizeImageOrientation;
                        resultModel.creationDate = contentEditingInput.creationDate;
                        resultModel.location = contentEditingInput.location;
                        if ([contentEditingInput.avAsset isKindOfClass:[AVURLAsset class]]) {
                            AVURLAsset *urlAsset = (AVURLAsset *)contentEditingInput.avAsset;
                            resultModel.videoURL = urlAsset.URL;
                            resultModel.avAsset = contentEditingInput.avAsset;
                        }
                        [weakSelf sortResultModel:resultModel total:selectedList.count models:models photos:photos videos:videos completion:^(NSArray *all, NSArray *photos, NSArray *videos) {
                            dispatch_async(dispatch_get_main_queue(), ^{
                                if (complete) {
                                    complete(all,photos,videos);
                                }
                            });
                        }];
                    }
                }];
            }else {
                resultModel.creationDate = [NSDate date];
                resultModel.displaySizeImage = photoModel.previewPhoto;
                if (photoModel.subType == HXPhotoModelMediaSubTypePhoto) {
                    resultModel.photoIndex = photoModel.endIndex;
                    resultModel.type = HXPhotoResultModelMediaTypePhoto;
                    resultModel.fullSizeImageOrientation = photoModel.previewPhoto.imageOrientation;
                    NSData *imageData;
                    NSString *suffix;
                    if (UIImagePNGRepresentation(photoModel.previewPhoto)) {
                        //返回为png图像。
                        imageData = UIImagePNGRepresentation(photoModel.previewPhoto);
                        suffix = @"png";
                    }else {
                        //返回为JPEG图像。
                        imageData = UIImageJPEGRepresentation(photoModel.previewPhoto, 1.0);
                        suffix = @"jpeg";
                    }
                    NSString *fileName = [[self uploadFileName] stringByAppendingString:[NSString stringWithFormat:@".%@",suffix]];
                    NSString *fullPathToFile = [NSTemporaryDirectory() stringByAppendingPathComponent:fileName];
                    [imageData writeToFile:fullPathToFile atomically:YES];
                    resultModel.fullSizeImageURL = [NSURL fileURLWithPath:fullPathToFile];
                }else {
                    resultModel.videoIndex = photoModel.videoIndex;
                    resultModel.type = HXPhotoResultModelMediaTypeVideo;
                    resultModel.videoURL = photoModel.videoURL;
                }
                [self sortResultModel:resultModel total:selectedList.count models:models photos:photos videos:videos completion:^(NSArray *all, NSArray *photos, NSArray *videos) {
                    dispatch_async(dispatch_get_main_queue(), ^{
                        if (complete) {
                            complete(all,photos,videos);
                        }
                    });
                }];
            }
            
        }
    });
}

```
 Comments: 
 Comment 0: 目前使用HXPhotoView时不支持单选...这个问题近期会解决
 Comment 1: 我的项目使用了你的这个项目，需求是要支持单选视频或照片的。照片选择达到9张最大值，从最后一张开始删除就会出现崩溃。希望能尽快的修复
 Comment 2: 使用新版本当 照片设置最大选择9张，视频选择一个的时候。选择好之后想想删掉其中一张发生崩溃
 Comment 3: 可能会有一段时间不能更新了。。
{'source': 'GithubIssues', 'repo_name_with_owner': 'LoveZYForever/HXWeiboPhotoPicker', 'issue_id': 274761479, 'repo_stars': 858.0}