Make conversions from uint8 to eIPTCPState_t explicit (#445)

Prevents this warning from the TI CCS compiler:
    warning #190-D: enumerated type mixed with another type

Regardless of this compiler warning it seems like a good idea to signal
that this conversion is OK and expected. This is already being done when
doing the opposite conversion.

Author: jonathangjertsen

FreeRTOS_Sockets.c

@@ -2921,7 +2921,7 @@ void vSocketWakeUpUser( FreeRTOS_Socket_t * pxSocket )
     static BaseType_t bMayConnect( FreeRTOS_Socket_t const * pxSocket )
     {
         BaseType_t xResult;
-        eIPTCPState_t eState = pxSocket->u.xTCP.ucTCPState;
+        eIPTCPState_t eState = ( eIPTCPState_t ) pxSocket->u.xTCP.ucTCPState;
 
         switch( eState )
         {
@@ -3318,7 +3318,7 @@ void vSocketWakeUpUser( FreeRTOS_Socket_t * pxSocket )
 
             while( xByteCount == 0 )
             {
-                eIPTCPState_t eState = pxSocket->u.xTCP.ucTCPState;
+                eIPTCPState_t eState = ( eIPTCPState_t ) pxSocket->u.xTCP.ucTCPState;
 
                 switch( eState )
                 {

FreeRTOS_TCP_IP.c

@@ -397,7 +397,7 @@
     static BaseType_t prvTCPSocketIsActive( uint8_t ucStatus )
     {
         BaseType_t xResult;
-        eIPTCPState_t eStatus = ucStatus;
+        eIPTCPState_t eStatus = ( eIPTCPState_t ) ucStatus;
 
         switch( eStatus )
         {
@@ -458,7 +458,7 @@
         static BaseType_t prvTCPStatusAgeCheck( FreeRTOS_Socket_t * pxSocket )
         {
             BaseType_t xResult;
-            eIPTCPState_t eState = pxSocket->u.xTCP.ucTCPState;
+            eIPTCPState_t eState = ( eIPTCPState_t ) pxSocket->u.xTCP.ucTCPState;
 
             switch( eState )
             {
@@ -3357,7 +3357,7 @@
                 }
             }
 
-            eState = pxSocket->u.xTCP.ucTCPState;
+            eState = ( eIPTCPState_t ) pxSocket->u.xTCP.ucTCPState;
 
             switch( eState )
             {