Bug 526271: Uninitialized value in can_enter_product() due to a missing argument…

Bugzilla/User.pm

@@ -714,6 +714,7 @@ sub get_selectable_classifications {
 sub can_enter_product {
     my ($self, $input, $warn) = @_;
     my $dbh = Bugzilla->dbh;
+    $warn ||= 0;
 
     if (!defined $input) {
         return unless $warn == THROW_ERROR;

buglist.cgi

@@ -1101,7 +1101,7 @@ elsif (my @product_input = $cgi->param('product')) {
 }
 # We only want the template to use it if the user can actually 
 # enter bugs against it.
-if (Bugzilla->user->can_enter_product($one_product)) {
+if ($one_product && Bugzilla->user->can_enter_product($one_product)) {
     $vars->{'one_product'} = $one_product;
 }