netfilter: physdev: add missed blank

Signed-off-by: NHangbin Liu <liuhangbin@gmail.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/xt_physdev.c

@@ -107,8 +107,8 @@ static int physdev_mt_check(const struct xt_mtchk_param *par)
 	     info->invert & XT_PHYSDEV_OP_BRIDGED) &&
 	    par->hook_mask & ((1 << NF_INET_LOCAL_OUT) |
 	    (1 << NF_INET_FORWARD) | (1 << NF_INET_POST_ROUTING))) {
-		pr_info("using --physdev-out and --physdev-is-out are only"
-			"supported in the FORWARD and POSTROUTING chains with"
+		pr_info("using --physdev-out and --physdev-is-out are only "
+			"supported in the FORWARD and POSTROUTING chains with "
 			"bridged traffic.\n");
 		if (par->hook_mask & (1 << NF_INET_LOCAL_OUT))
 			return -EINVAL;