Use the enum/define SHUT_RDWR instead of heardcoded "2" to shutdown

sql/mysqld.cc

@@ -713,7 +713,7 @@ static void close_connections(void)
   {
     if (ip_sock != INVALID_SOCKET)
     {
-      (void) shutdown(ip_sock,2);
+      (void) shutdown(ip_sock, SHUT_RDWR);
       (void) closesocket(ip_sock);
       ip_sock= INVALID_SOCKET;
     }
@@ -745,7 +745,7 @@ static void close_connections(void)
 #ifdef HAVE_SYS_UN_H
   if (unix_sock != INVALID_SOCKET)
   {
-    (void) shutdown(unix_sock,2);
+    (void) shutdown(unix_sock, SHUT_RDWR);
     (void) closesocket(unix_sock);
     (void) unlink(mysqld_unix_port);
     unix_sock= INVALID_SOCKET;
@@ -848,7 +848,7 @@ static void close_server_sock()
   {
     ip_sock=INVALID_SOCKET;
     DBUG_PRINT("info",("calling shutdown on TCP/IP socket"));
-    VOID(shutdown(tmp_sock,2));
+    VOID(shutdown(tmp_sock, SHUT_RDWR));
 #if defined(__NETWARE__)
     /*
       The following code is disabled for normal systems as it causes MySQL
@@ -863,7 +863,7 @@ static void close_server_sock()
   {
     unix_sock=INVALID_SOCKET;
     DBUG_PRINT("info",("calling shutdown on unix socket"));
-    VOID(shutdown(tmp_sock,2));
+    VOID(shutdown(tmp_sock, SHUT_RDWR));
 #if defined(__NETWARE__)
     /*
       The following code is disabled for normal systems as it may cause MySQL
@@ -4088,7 +4088,7 @@ pthread_handler_t handle_connections_sockets(void *arg __attribute__((unused)))
 	  if (req.sink)
 	    ((void (*)(int))req.sink)(req.fd);
 
-	  (void) shutdown(new_sock,2);
+	  (void) shutdown(new_sock, SHUT_RDWR);
 	  (void) closesocket(new_sock);
 	  continue;
 	}
@@ -4103,7 +4103,7 @@ pthread_handler_t handle_connections_sockets(void *arg __attribute__((unused)))
       if (getsockname(new_sock,&dummy, &dummyLen) < 0)
       {
 	sql_perror("Error on new connection socket");
-	(void) shutdown(new_sock,2);
+	(void) shutdown(new_sock, SHUT_RDWR);
 	(void) closesocket(new_sock);
 	continue;
       }
@@ -4115,7 +4115,7 @@ pthread_handler_t handle_connections_sockets(void *arg __attribute__((unused)))
 
     if (!(thd= new THD))
     {
-      (void) shutdown(new_sock,2);
+      (void) shutdown(new_sock, SHUT_RDWR);
       VOID(closesocket(new_sock));
       continue;
     }
@@ -4129,7 +4129,7 @@ pthread_handler_t handle_connections_sockets(void *arg __attribute__((unused)))
 	vio_delete(vio_tmp);
       else
       {
-	(void) shutdown(new_sock,2);
+	(void) shutdown(new_sock, SHUT_RDWR);
 	(void) closesocket(new_sock);
       }
       delete thd;

vio/viosocket.c

@@ -276,7 +276,7 @@ int vio_close(Vio * vio)
  if (vio->type != VIO_CLOSED)
   {
     DBUG_ASSERT(vio->sd >= 0);
-    if (shutdown(vio->sd,2))
+    if (shutdown(vio->sd, SHUT_RDWR))
       r= -1;
     if (closesocket(vio->sd))
       r= -1;