CPPCheck found fixes.

bacnet-stack/demo/epics/main.c

@@ -998,7 +998,7 @@ int CheckCommandLineArgs(
                         /* loop counter */
                         unsigned j;
                         count =
-                            sscanf(argv[i], "%x:%x:%x:%x:%x:%x", &mac[0],
+                            sscanf(argv[i], "%2x:%2x:%2x:%2x:%2x:%2x", &mac[0],
                             &mac[1], &mac[2], &mac[3], &mac[4], &mac[5]);
                         if (count == 6) {       /* success */
                             Target_Address.mac_len = count;

bacnet-stack/demo/gateway/main.c

@@ -180,10 +180,10 @@ void Initialize_Device_Addresses(
     )
 {
     int i = 0;  /* First entry is Gateway Device */
-    DEVICE_OBJECT_DATA *pDev;
-    uint16_t myPort;
+    DEVICE_OBJECT_DATA *pDev = NULL;
     /* Setup info for the main gateway device first */
 #if defined(BACDL_BIP)
+    uint16_t myPort;
     struct in_addr *netPtr;     /* Lets us cast to this type */
     uint8_t *gatewayMac = NULL;
     uint32_t myAddr = bip_get_addr();