nfs-kernel-server: fix freeaddrinfo usage in nfs-kernel-server, because freeaddrinfo in musl after the 1.1.21

update, doesn't handly NULL pointers (which seems to spec conform) see
https://www.openwall.com/lists/musl/2019/02/03/3 for more info

Signed-off-by: Peter Wagner <tripolar@gmx.at>

net/nfs-kernel-server/files/nfsd.init

@@ -9,6 +9,7 @@ USE_PROCD=1
 NFS_D=/var/lib/nfs
 RECOVERY_D=$NFS_D/v4recovery
 LOCK_D=/var/lib/nfs/sm
+VAR_NFS=/var/lib/nfs
 
 start_service() {
 	grep -q /proc/fs/nfsd /proc/mounts || \
@@ -18,6 +19,9 @@ start_service() {
 	mkdir -p $LOCK_D
 	touch $NFS_D/rmtab
 
+	mkdir -p $VAR_NFS
+	chown nfs:nfs $VAR_NFS
+
         sysctl -w fs.nfs.nlm_tcpport=32777 fs.nfs.nlm_udpport=32777 > /dev/null
 
 	procd_open_instance
@@ -25,7 +29,7 @@ start_service() {
 	procd_close_instance
 
 	/usr/sbin/exportfs -r
-	/usr/sbin/rpc.nfsd
+	/usr/sbin/rpc.nfsd --grace-time 10
 
 	procd_open_instance
 	procd_set_param command /usr/sbin/rpc.mountd -p 32780 -F