Locker assertion failure around ASVideoPlayerNode init

[qiaoyan]

#1024 seems bring locker assertion failure around ASVideoPlayerNode init. Remove ASVideoPlayerNode works fine, or disable locking assertions.

ASVideoPlayerNode *videoPlayerNode = [[ASVideoPlayerNode alloc] initWithURL:videoMetaDataMP4.URL];
            videoPlayerNode.userInteractionEnabled = YES;
            videoPlayerNode.shouldAutoPlay = YES;
            if (mediaType.unsignedIntegerValue == 0) {
                videoPlayerNode.shouldAutoRepeat = YES;
            }
            videoPlayerNode.muted = YES;
            videoPlayerNode.delegate = self;
            videoPlayerNode.placeholderImageURL = [NSURL URLWithString:[obj valueForKey:@"mediaUrl"]];

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2018-07-18 18:35:42.637364+0800 Simple T[6209:1212423] *** Assertion failure in -[ASVideoPlayerNode _insertSubnode:atSubnodeIndex:sublayerIndex:andRemoveSubnode:], /Users/new/Desktop/Code/Projects/Simple T/Pods/Texture/Source/ASDisplayNode.mm:2212
2018-07-18 18:35:42.638717+0800 Simple T[6209:1212423] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Expected instanceLock.locked() to be false.'