config: fix erroneous clamp message if clamp value == max

If the clamp value is equal to and only equal to PD_MIN_LEN_MAX then the warn
is emitted, when it shouldn't be since PD_MIN_LEN_MAX is a valid max value.

Signed-off-by: Paul Donald <newtwen+github@gmail.com>
Link: #283
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Author: systemcrash

src/config.c

@@ -1304,7 +1304,7 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 		if (pd_min_len > PD_MIN_LEN_MAX)
 			iface->dhcpv6_pd_min_len = PD_MIN_LEN_MAX;
 		iface->dhcpv6_pd_min_len = pd_min_len;
-		if (pd_min_len >= PD_MIN_LEN_MAX)
+		if (pd_min_len > PD_MIN_LEN_MAX)
 			warn("Clamped invalid %s value configured for interface '%s' to %d",
 			     iface_attrs[IFACE_ATTR_DHCPV6_PD_MIN_LEN].name, iface->name, iface->dhcpv6_pd_min_len);
 	}