Bug#428632: openssh-client: please reject extra commandline arguments

[jpryzby@quoininc.com (Justin Pryzby)]

Package: openssh-client
Version: 1:4.3p2-8.qi1

$ ssh-add -l asdfasdf
2048 73:84:64:93:bb:09:bf:1e:26:b4:b2:ab:b6:15:9f:4a .ssh/x (RSA)
2048 c9:a1:81:80:df:30:9d:70:08:fc:ce:d6:8e:9f:50:04 .ssh/y (RSA)

$? -eq 0