*: fix some inconsistent control statement style

src/network/networkd-brvlan.c

@@ -142,7 +142,7 @@ static int append_vlan_info_data(Link *const link, sd_netlink_message *req, uint
 
                 next:
                         i = j;
-                } while(!done);
+                } while (!done);
         }
         if (!cnt)
                 return -EINVAL;

src/network/networkd-link.c

@@ -3272,7 +3272,7 @@ int link_update(Link *link, sd_netlink_message *m) {
                                                                          ARPHRD_ETHER,
                                                                          (const uint8_t *)&link->mac,
                                                                          sizeof(link->mac));
-                                        if(r < 0)
+                                        if (r < 0)
                                                 return log_link_warning_errno(link, r, "Could not update MAC client id in DHCP client: %m");
                                         break;
                                 default:

src/network/networkd-manager.c

@@ -816,7 +816,7 @@ int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, voi
 
         switch (type) {
         case RTM_NEWRULE:
-                if(!rule) {
+                if (!rule) {
                         r = routing_policy_rule_add_foreign(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule);
                         if (r < 0) {
                                 log_warning_errno(r, "Could not add rule: %m");