main/dhcp: security upgrade to 4.2.4_p2 (CVE-2012-3955)

fixes #1412

main/dhcp/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=dhcp
-pkgver=4.2.4_p1
+pkgver=4.2.4_p2
 _realver=${pkgver/_p/-P}
 pkgrel=0
 pkgdesc="ISC Dynamic Host Configuration Protocol (DHCP)"
@@ -74,7 +74,7 @@ dhcrelay() {
 		"$subpkgdir"/etc/conf.d/dhcrelay
 }
 
-md5sums="0ca7181024651f6323951d5498c8020b  dhcp-4.2.4-P1.tar.gz
+md5sums="fe36056f2d274fa4b82a5422f192e65f  dhcp-4.2.4-P2.tar.gz
 37abf1fb047a353e91b022fafdabf39a  linux_ipv6_discover.patch
 a9eaf182dae3984670da52f20ae10fba  dhcp-3.0-fix-perms.patch
 1597c012bb1a2c0828254c87f0a904ad  dhcrelay.initd