ldns: fix build on Perl 5.22. Closes #1914.

srcpkgs/ldns/template

@@ -1,7 +1,7 @@
 # Template file for 'ldns'
 pkgname=ldns
 version=1.6.17
-revision=5
+revision=6
 build_style=gnu-configure
 configure_args="--with-drill --with-examples
  --with-trust-anchor=/etc/dns/root.key
@@ -15,6 +15,10 @@ homepage="http://www.nlnetlabs.nl/projects/ldns/"
 distfiles="http://www.nlnetlabs.nl/downloads/${pkgname}/${pkgname}-${version}.tar.gz"
 checksum=8b88e059452118e8949a2752a55ce59bc71fa5bc414103e17f5b6b06f9bcc8cd
 
+post_extract() {
+	sed -i 's/defined(@\$also)/@$also/' doc/doxyparse.pl
+}
+
 libldns_package() {
 	depends="dnssec-anchors"
 	short_desc="Modern DNS/DNSSEC library"