[core] Fix typo of variable name
[core] Fix typo of variable name

ethouris/srt,Haivision/srt,Cinegy/srt,ethouris/srt,ethouris/srt,Haivision/srt,Cinegy/srt,Haivision/srt,Cinegy/srt,ethouris/srt,Cinegy/srt,Haivision/srt