avoid crash when proxing HLS (#558)

go.mod

@@ -21,3 +21,5 @@ require (
 )
 
 replace github.com/notedit/rtmp => github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927
+
+replace github.com/asticode/go-astits => github.com/aler9/go-astits v0.0.0-20210930094507-ed7aeae3b4b4

go.sum

@@ -2,14 +2,14 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafo
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d h1:UQZhZ2O0vMHr2cI+DC1Mbh0TJxzA3RcLoMsFw+aXw7E=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
+github.com/aler9/go-astits v0.0.0-20210930094507-ed7aeae3b4b4 h1:xUK/8oYFDXiOFtvVCqAvU9I0ngiw1CfHKhUD+O6a6xE=
+github.com/aler9/go-astits v0.0.0-20210930094507-ed7aeae3b4b4/go.mod h1:DkOWmBNQpnr9mv24KfZjq4JawCFX1FCqjLVGvO0DygQ=
 github.com/aler9/gortsplib v0.0.0-20210928202522-1c23e1ff7e8e h1:WRcGt4GtihkuaoHRrEqqjEBzJy+s0cK4ozR5E6oLjIo=
 github.com/aler9/gortsplib v0.0.0-20210928202522-1c23e1ff7e8e/go.mod h1:DKI+t4Wj5YjkpxmiQhmG3qRG5VMOprDQvto62wMO68c=
 github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927 h1:95mXJ5fUCYpBRdSOnLAQAdJHHKxxxJrVCiaqDi965YQ=
 github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927/go.mod h1:vzuE21rowz+lT1NGsWbreIvYulgBpCGnQyeTyFblUHc=
 github.com/asticode/go-astikit v0.20.0 h1:+7N+J4E4lWx2QOkRdOf6DafWJMv6O4RRfgClwQokrH8=
 github.com/asticode/go-astikit v0.20.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
-github.com/asticode/go-astits v1.9.0 h1:69cilL0/7uwsxdGNQgwmVBu6JP0aMicXSm91ukJDjgQ=
-github.com/asticode/go-astits v1.9.0/go.mod h1:DkOWmBNQpnr9mv24KfZjq4JawCFX1FCqjLVGvO0DygQ=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=