fastd: fix segfault on startup

srcpkgs/fastd/patches/fix-segfault.patch

@@ -0,0 +1,11 @@
+--- src/crypto/mac/macs.c.in.orig	2015-01-29 06:41:45.000000000 +0100
++++ src/crypto/mac/macs.c.in	2015-12-19 14:41:42.579958439 +0100
+@@ -67,7 +67,7 @@ static inline bool mac_available(const f
+ void fastd_mac_init(void) {
+ 	size_t i, j;
+ 	for (i = 0; i < array_size(macs); i++) {
+-		for (j = 0; macs[i].impls[j].impl; j++) {
++		for (j = 0; macs[i].impls[j].impl == NULL; j++) {
+ 			if (mac_available(macs[i].impls[j].impl))
+ 				break;
+ 		}

srcpkgs/fastd/template

@@ -1,7 +1,7 @@
 # Template file for 'fastd'
 pkgname=fastd
 version=17
-revision=3
+revision=4
 build_style=cmake
 hostmakedepends="cmake pkg-config bison"
 makedepends="libuecc-devel libsodium-devel json-c-devel libcap-devel"