*: fix in_addr initialisers

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
diff --git a/ospfd/ospf_snmp.c b/ospfd/ospf_snmp.c
index 604766d..1636153 100644
--- a/ospfd/ospf_snmp.c
+++ b/ospfd/ospf_snmp.c
@@ -213,7 +213,7 @@
 oid ospf_trap_oid [] = { OSPF2MIB, 16, 2 }; /* Not reverse mappable! */
 
 /* IP address 0.0.0.0. */
-static struct in_addr ospf_empty_addr = {0};
+static struct in_addr ospf_empty_addr = { .s_addr = 0 };
 
 /* Hook functions. */
 static u_char *ospfGeneralGroup (struct variable *, oid *, size_t *,