Cast htonl() to unsigned long when printing

ntohl() returns a u32, which is defined as an unsigned int in Clang.
So we need to explicitely upper cast it into unsigned long.

Fixes this Clang warnining:

> /source/FreeRTOS_IPv4.c:443:52: warning: format specifies type 'unsigned long' but the argument has type 'uint32_t' (aka 'unsigned int') [-Wformat]
>   442 |                                 FreeRTOS_printf( ( "prvAllowIPPacket: UDP packet from %lxip without CRC dropped\n",
>       |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>       |                                                                                       %x
>   443 |                                                    FreeRTOS_ntohl( pxIPPacket->xIPHeader.ulSourceIPAddress ) ) );
>       |                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /source/include/FreeRTOS_IP.h:252:32: note: expanded from macro 'FreeRTOS_ntohl'
>   252 | #define FreeRTOS_ntohl( x )    FreeRTOS_htonl( x )
>       |                                ^
> /source/include/FreeRTOS_IP.h:233:5: note: expanded from macro 'FreeRTOS_htonl'
>   233 |     (                                                              \
>       |     ^
> /build/src/FreeRTOSIPConfig.h:75:12: note: expanded from macro 'FreeRTOS_printf'
>    75 |     printf X
>       |            ^

Author: concatime

source/FreeRTOS_IPv4.c

@@ -440,7 +440,7 @@ enum eFrameProcessingResult prvAllowIPPacketIPv4( const struct xIP_PACKET * cons
                             if( xCount < 5 ) /* LCOV_EXCL_BR_LINE */
                             {
                                 FreeRTOS_printf( ( "prvAllowIPPacket: UDP packet from %lxip without CRC dropped\n",
-                                                   FreeRTOS_ntohl( pxIPPacket->xIPHeader.ulSourceIPAddress ) ) );
+                                                   ( unsigned long ) FreeRTOS_ntohl( pxIPPacket->xIPHeader.ulSourceIPAddress ) ) );
                                 xCount++;
                             }
                         }