[interchange] Fix undeclared variable in standard's ncheck_category subroutine.

commit 3eb39ce16bb5d9eaaf86940192e8f8ea3dfd668a
Author: Stefan Hornburg (Racke) <[email protected]>
Date:   Tue Feb 14 07:53:43 2012 +0100

    Fix undeclared variable in standard's ncheck_category subroutine.

 dist/standard/catalog.cfg |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/dist/standard/catalog.cfg b/dist/standard/catalog.cfg
index 22be80b..cd4e446 100644
--- a/dist/standard/catalog.cfg
+++ b/dist/standard/catalog.cfg
@@ -687,7 +687,7 @@ sub {
     $name =~ s,_, ,g;
     my ($prod_group, $category) = split m{/}, $name; 
 
-    my $search;
+    my ($search, $o);
     $search->{co} = 1;
     $search->{fi} = 'products';
     $search->{st} = 'db';