'if' is not required

src/auth.c

@@ -1166,10 +1166,7 @@ unsigned long udpresolve(int af, unsigned char * name, unsigned char * value, un
 				ttl = ntohl(*(unsigned long *)(buf + k + 6));
 				memcpy(value, buf + k + 12, af == AF_INET6? 16:4);
 				if(ttl < 60 || ttl > (3600*12)) ttl = 300;
-				if(ttl){
-					hashadd(af == AF_INET6?&dns6_table:&dns_table, name, value, conf.time+ttl);
-
-				}
+				hashadd(af == AF_INET6?&dns6_table:&dns_table, name, value, conf.time+ttl);
 				if(retttl) *retttl = ttl;
 				return 1;
 			}