Fix LP#909414: Valgrind warnings in threadpool code

sql/net_serv.cc

@@ -138,6 +138,8 @@ my_bool my_net_init(NET *net, Vio* vio)
   net->net_skip_rest_factor= 0;
   net->last_errno=0;
   net->unused= 0;
+  net->read_timeout=0;
+  net->write_timeout=0;
 
   if (vio != 0)					/* If real connection */
   {

sql/threadpool_unix.cc

@@ -203,6 +203,7 @@ static int io_poll_create()
 int io_poll_associate_fd(int pollfd, int fd, void *data)
 {
   struct epoll_event ev;
+  ev.data.u64= 0; /* Keep valgrind happy */
   ev.data.ptr= data;
   ev.events=  EPOLLIN|EPOLLET|EPOLLERR|EPOLLRDHUP|EPOLLONESHOT;
   return epoll_ctl(pollfd, EPOLL_CTL_ADD,  fd, &ev);
@@ -213,6 +214,7 @@ int io_poll_associate_fd(int pollfd, int fd, void *data)
 int io_poll_start_read(int pollfd, int fd, void *data)
 {
   struct epoll_event ev;
+  ev.data.u64= 0; /* Keep valgrind happy */
   ev.data.ptr= data;
   ev.events=  EPOLLIN|EPOLLET|EPOLLERR|EPOLLRDHUP|EPOLLONESHOT;
   return epoll_ctl(pollfd, EPOLL_CTL_MOD,  fd, &ev);