ppp: fix download URL

The file is not available at the older path any more.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 45910

package/network/services/ppp/Makefile

@@ -13,7 +13,7 @@ PKG_VERSION:=2.4.7
 PKG_RELEASE:=5
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=ftp://ftp.samba.org/pub/ppp/
+PKG_SOURCE_URL:=https://download.samba.org/pub/ppp/
 PKG_MD5SUM:=78818f40e6d33a1d1de68a1551f6595a
 PKG_MAINTAINER:=Felix Fietkau <nbd@openwrt.org>
 PKG_LICENSE:=BSD-4-Clause