install: fix detection of smbclient

sub check_env {

    # Check for smbclient

    my $output = `which smbclient &>/dev/null`;

    `which smbclient 2>&1`;

    if ($? != 0) {

        die "[ERROR] Samba client seems not to be installed. (smbclient)";

        die "[ERROR] No smbclient installed.";

    }

    # Check if we don't have Root

    # Check if we are root

    die "[ERROR] Must be run with root privileges\n" if $> != 0;

}

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