Fix compiler warnings when the TCP Window is not used (#124)

* Fix warnings when TCP window is not used

* Uncrustify

Author: AniruddhaKanhere

FreeRTOS_IP.c

@@ -354,6 +354,8 @@ static BaseType_t xIPTaskInitialised = pdFALSE;
 
 /*-----------------------------------------------------------*/
 
+#include "random.h"
+
 /* Coverity wants to make pvParameters const, which would make it incompatible. Leave the
  * function signature as is. */
 
@@ -434,6 +436,8 @@ static void prvIPTask( void * pvParameters )
 
         iptraceNETWORK_EVENT_RECEIVED( xReceivedEvent.eEventType );
 
+        vAddBytesToPool( xReceivedEvent.eEventType );
+
         switch( xReceivedEvent.eEventType )
         {
             case eNetworkDownEvent:

FreeRTOS_TCP_IP.c

@@ -1498,6 +1498,12 @@
                 uxIndex += ( size_t ) ucLen;
             }
         }
+
+        #if ( ipconfigUSE_TCP_WIN == 0 )
+            /* Avoid compiler warnings when TCP window is not used. */
+            ( void ) xHasSYNFlag;
+        #endif
+
         return uxIndex;
     }
     /*-----------------------------------------------------------*/
@@ -2595,11 +2601,12 @@
         TCPHeader_t * pxTCPHeader = &pxProtocolHeaders->xTCPHeader;
         const TCPWindow_t * pxTCPWindow = &pxSocket->u.xTCP.xTCPWindow;
         UBaseType_t uxOptionsLength = pxTCPWindow->ucOptionLength;
-        /* memcpy() helper variables for MISRA Rule 21.15 compliance*/
-        const void * pvCopySource;
-        void * pvCopyDest;
 
         #if ( ipconfigUSE_TCP_WIN == 1 )
+            /* memcpy() helper variables for MISRA Rule 21.15 compliance*/
+            const void * pvCopySource;
+            void * pvCopyDest;
+
             if( uxOptionsLength != 0U )
             {
                 /* TCP options must be sent because a packet which is out-of-order

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 warning "ipconfigTCP_MEM_STATS_MAX_ALLOCATION undefined?"
 #endif
 
 #if ( ipconfigUSE_TCP_MEM_STATS != 0 )