Merge pull request #10866 from miri64/gnrc_sixlowpan/fix/type-finding-loop

gnrc_sixlowpan: stop type-finding loop when type is found

sys/net/gnrc/network_layer/sixlowpan/gnrc_sixlowpan.c

@@ -73,6 +73,7 @@ void gnrc_sixlowpan_dispatch_recv(gnrc_pktsnip_t *pkt, void *context,
          ptr = ptr->next) {
         if ((ptr->next) && (ptr->next->type == GNRC_NETTYPE_NETIF)) {
             type = ptr->type;
+            break;
         }
     }
 #else   /* MODULE_GNRC_IPV6 */