`context#ReadForm`: do not return an error if request data are not there, instead return nil without touching the ptr value. Requested at: https://github.com/kataras/iris/issues/1095
`context#ReadForm`: do not return an error if request data are not there, instead return nil without touching the ptr value. Requested at: https://github.com/kataras/iris/issues/1095


Former-commit-id: 9662854b3242b91ccb74d6adca72cdcb61689bd8
kataras/iris,kataras/iris,kataras/iris,kataras/iris,kataras/gapi,kataras/gapi