simplify isdn detection:

- no need to pass a ref around; if it's bound to be overwritten, just return a
  new hash
- let isdn_detect only care of which fields we want for isdn stuff

1 files changed, 2 insertions, 1 deletions

diff --git a/perl-install/network/isdn.pm b/perl-install/network/isdn.pm
index 2e8177b37..7ac63f15b 100644
--- a/perl-install/network/isdn.pm
+++ b/perl-install/network/isdn.pm
@@ -245,7 +245,7 @@ sub isdn_detect {
 }
 
 sub isdn_detect_backend {
-    my ($isdn) = @_;
+    my ($isdn) = { };
     if (my ($c) = modules::probe_category('network/isdn')) {
 	$isdn = { map { $_ => $c->{$_} } qw(description vendor id driver card_type type) };
 	$isdn->{$_} = sprintf("%0x", $isdn->{$_}) foreach 'vendor', 'id';
@@ -257,6 +257,7 @@ sub isdn_detect_backend {
 	}
 	$c->{options} =~ /protocol=(\d)/ and $isdn->{protocol} = $1;
     }
+    $isdn;
 }
 
 sub isdn_get_list() {