[lrt] fix extraction with empty tags(closes #20264)
[lrt] fix extraction with empty tags(closes #20264)

Tatsh/youtube-dl,ozburo/youtube-dl,ozburo/youtube-dl,yan12125/youtube-dl,rg3/youtube-dl,Tatsh/youtube-dl,spvkgn/youtube-dl,yan12125/youtube-dl,rg3/youtube-dl,spvkgn/youtube-dl