Bugfix m.XmlWriterRaw undefined

[joelmdesouza]

Package github.com/clbanning/mxj/j2x uses m.XmlWriterRaw removed on v1.8.4

github.com/clbanning/mxj/j2x
../clbanning/mxj/j2x/j2x.go:39:2: not enough arguments to return
../clbanning/mxj/j2x/j2x.go:39:10: m.XmlWriterRaw undefined (type mxj.Map has no field or method XmlWriterRaw)
../clbanning/mxj/j2x/j2x.go:58:17: m.XmlWriterRaw undefined (type mxj.Map has no field or method XmlWriterRaw)

https://github.com/clbanning/mxj/blob/master/j2x/j2x.go#L34-L40

https://github.com/clbanning/mxj/blob/master/j2x/j2x.go#L53-L60

[clbanning]

Thanks. Fixed on tip.

[joelmdesouza]

Thanks.