[LWIP] fixed select issues: pollset need clean.
@@ -52,7 +52,7 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struc
/* Allocate the descriptor list for poll() */
if (npfds > 0)
{
- pollset = (struct pollfd *)rt_malloc(npfds * sizeof(struct pollfd));
+ pollset = (struct pollfd *)rt_calloc(npfds, sizeof(struct pollfd));
if (!pollset)
{
return -1;
