The FD_FORM ioctl used to ignore errors from the floppy controller; now when it encounters an error it returns an error from the ioctl. Ignore any errors when using the FD_FORM ioctl.
The FD_FORM ioctl used to ignore errors from the floppy controller; now when
it encounters an error it returns an error from the ioctl.
Ignore any errors when using the FD_FORM ioctl.

PR:	kern/103862
MFC after:	3 days

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