Change exception raised by DontReadFromInput.fileno() from ValueError to io.UnsupportedOperation
Change exception raised by DontReadFromInput.fileno() from ValueError to io.UnsupportedOperation

rmfitzpatrick/pytest,pfctdayelise/pytest,RonnyPfannschmidt/pytest,alfredodeza/pytest,davidszotten/pytest,The-Compiler/pytest,hackebrot/pytest,MichaelAquilina/pytest,tareqalayan/pytest,The-Compiler/pytest,pytest-dev/pytest,flub/pytest,nicoddemus/pytest,Akasurde/pytest,nicoddemus/pytest,tomviner/pytest,txomon/pytest,ddboline/pytest,markshao/pytest,tomviner/pytest