port-i386/50515: src/sys/arch/i386/stand/lib/dosfile.c:63: bad switch statement ?

[dcb314%hotmail.com@localhost]

>Number:         50515
>Category:       port-i386
>Synopsis:       src/sys/arch/i386/stand/lib/dosfile.c:63: bad switch statement ?
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Dec 10 22:10:00 +0000 2015
>Originator:     David Binderman
>Release:        cvs dated 20151210
>Organization:
>Environment:
>Description:
[src/sys/arch/i386/stand/lib/dosfile.c:63] -> [src/sys/arch/i386/stand/lib/dosfile.c:66]: (warning) Variable 'err' is reassigned a value before the old one has been used. 'break;' missing?

Source code is

    switch (doserrno) {
        case 1:
        case 4:
        case 12:
        default:
        err = EIO;
        case 2:
        case 3:
        err = ENOENT;
        case 5:
        err = EPERM;
        case 6:
        err = EINVAL;
    }

Someone doesn't know how to code in C. Suggest code rework. 
>How-To-Repeat:

>Fix: