Fixed playing movie without subtitles
Fixed playing movie without subtitles

Summary: Sometimes when playing movie without subtitles chars occurres.
This was fixed in this commit.

sitexa/AndroidFFmpeg,10045125/AndroidFFmpeg,mrduongnv/AndroidFFmpeg,mondoktamas/AndroidFFmpeg,zzhhui/AndroidFFmpeg,MisterRager/AndroidFFmpeg,q273255702/AndroidFFmpeg,matthewn4444/VPlayer_lib,zzhhui/AndroidFFmpeg,appunite/AndroidFFmpeg,boke/AndroidFFmpeg,sitexa/AndroidFFmpeg,appunite/AndroidFFmpeg,kyawkyaw/AndroidFFmpeg,hank5000/VPlayer_lib,ShawnKoo/AndroidFFmpeg,boke/AndroidFFmpeg,10045125/AndroidFFmpeg,MisterRager/AndroidFFmpeg,guoyuqing/ffmpeg,code-guru/AndroidFFmpeg-appunite,shakin/AndroidFFmpeg,mondoktamas/AndroidFFmpeg,code-guru/AndroidFFmpeg-appunite,MisterRager/AndroidFFmpeg,guoyuqing/ffmpeg,matthewn4444/VPlayer_lib,matthewn4444/VPlayer_lib,shakin/AndroidFFmpeg,kyawkyaw/AndroidFFmpeg,xinran505982/AndroidVideoPlayer-master,lulufei/AndroidFFmpeg,hank5000/VPlayer_lib,shine-chen/AndroidFFmpeg-with-RTMP,shine-chen/AndroidFFmpeg-with-RTMP,shakin/AndroidFFmpeg,zzhhui/AndroidFFmpeg,mondoktamas/AndroidFFmpeg,lulufei/AndroidFFmpeg,MisterRager/AndroidFFmpeg,mrduongnv/AndroidFFmpeg,sitexa/AndroidFFmpeg,QDPeng/AndroidFFmpeg,zzhhui/AndroidFFmpeg,guoyuqing/ffmpeg,xinran505982/AndroidVideoPlayer-master,sitexa/AndroidFFmpeg,shine-chen/AndroidFFmpeg-with-RTMP,guoyuqing/ffmpeg,mondoktamas/AndroidFFmpeg,q273255702/AndroidFFmpeg,boke/AndroidFFmpeg,ShawnKoo/AndroidFFmpeg,QDPeng/AndroidFFmpeg,hank5000/VPlayer_lib,mobdim/AndroidFFmpeg,kyawkyaw/AndroidFFmpeg,shakin/AndroidFFmpeg,xinran505982/AndroidVideoPlayer-master,QDPeng/AndroidFFmpeg,matthewn4444/VPlayer_lib,hank5000/VPlayer_lib,lulufei/AndroidFFmpeg,appunite/AndroidFFmpeg,code-guru/AndroidFFmpeg-appunite,kyawkyaw/AndroidFFmpeg,xinran505982/AndroidVideoPlayer-master,ShawnKoo/AndroidFFmpeg,q273255702/AndroidFFmpeg,shine-chen/AndroidFFmpeg-with-RTMP,mrduongnv/AndroidFFmpeg,mobdim/AndroidFFmpeg,mrduongnv/AndroidFFmpeg,10045125/AndroidFFmpeg,boke/AndroidFFmpeg,mobdim/AndroidFFmpeg,10045125/AndroidFFmpeg,lulufei/AndroidFFmpeg,q273255702/AndroidFFmpeg,code-guru/AndroidFFmpeg-appunite,appunite/AndroidFFmpeg,ShawnKoo/AndroidFFmpeg,QDPeng/AndroidFFmpeg,mobdim/AndroidFFmpeg