Fix misc warnings. (#230)

* Fix two warnings in TCP source

Author: AniruddhaKanhere

FreeRTOS_IP.c

@@ -1997,13 +1997,11 @@ static eFrameProcessingResult_t prvAllowIPPacket( const IPPacket_t * const pxIPP
                         if( pxIPPacket->xIPHeader.ucProtocol == ( uint8_t ) ipPROTOCOL_UDP )
                         {
                             ProtocolPacket_t * pxProtPack;
-                            const uint16_t * pusChecksum;
 
                             /* pxProtPack will point to the offset were the protocols begin. */
                             pxProtPack = ipCAST_PTR_TO_TYPE_PTR( ProtocolPacket_t, &( pxNetworkBuffer->pucEthernetBuffer[ uxHeaderLength - ipSIZE_OF_IPv4_HEADER ] ) );
-                            pusChecksum = ( const uint16_t * ) ( &( pxProtPack->xUDPPacket.xUDPHeader.usChecksum ) );
 
-                            if( *pusChecksum == ( uint16_t ) 0U )
+                            if( pxProtPack->xUDPPacket.xUDPHeader.usChecksum == ( uint16_t ) 0U )
                             {
                                 #if ( ipconfigHAS_PRINTF != 0 )
                                     {

tools/tcp_utilities/tcp_mem_stats.c

@@ -49,7 +49,7 @@
 
 #ifndef ipconfigTCP_MEM_STATS_MAX_ALLOCATION
     #define ipconfigTCP_MEM_STATS_MAX_ALLOCATION    128u
-    #pragma warning "ipconfigTCP_MEM_STATS_MAX_ALLOCATION undefined?"
+    #pragma message ("ipconfigTCP_MEM_STATS_MAX_ALLOCATION undefined?")
 #endif
 
 #if ( ipconfigUSE_TCP_MEM_STATS != 0 )