Don't include sys/select.h on HP-UX as it doesn't exist
CLA: trivial
@@ -35,6 +35,8 @@ static int wsa_init_done = 0;
# include <unistd.h>
# if defined __VMS
# include <sys/socket.h>
+# elif defined _HPUX_SOURCE
+# include <sys/time.h>
# else
# include <sys/select.h>
# endif
