main/spamassassin: add missing patch and bump pkgrel

Last commit didn't bump pkgrel, but package needs rebuild.
Also added missing patch in source.

main/spamassassin/APKBUILD

@@ -3,7 +3,7 @@
 pkgname=spamassassin
 _pkgreal=Mail-SpamAssassin
 pkgver=3.4.1
-pkgrel=4
+pkgrel=5
 pkgdesc="The Powerful #1 Open-Source Spam Filter"
 url="http://search.cpan.org/dist/Mail-SpamAssassin/"
 arch="all"
@@ -18,6 +18,7 @@ source="http://search.cpan.org/CPAN/authors/id/K/KM/KMCGRAIL/${_pkgreal#*-}/$_pk
 	spamd.initd
 	spamd.confd
 	spamd.crond
+	net-dns-1.01-compat.patch
 	"
 builddir="$srcdir/$_pkgreal-$pkgver"