fix tax-on-tax (i.e. FEDERAL UNIVERSAL SERVICE FUND) on 2.3 branch, RT#20707

diff --git a/FS/FS/cust_main/Billing.pm b/FS/FS/cust_main/Billing.pm
index 3dc8f9c..0ec6b54 100644 (file)
--- a/FS/FS/cust_main/Billing.pm
+++ b/FS/FS/cust_main/Billing.pm
@@ -831,7 +831,7 @@ sub calculate_taxes {
     my $taxables = $taxlisthash->{$tax};
     my $tax_object = shift @$taxables; # the rest are line items
     foreach my $cust_bill_pkg ( @$taxables ) {
-      next unless ref($cust_bill_pkg) eq 'FS::cust_bill_pkg';
+      next unless ref($cust_bill_pkg) eq 'FS::cust_bill_pkg'; #IS needed for CCH tax-on-tax
 
       my @cust_tax_exempt_pkg = splice @{ $cust_bill_pkg->cust_tax_exempt_pkg };