Merged the get_read_fd and get_write_fd requests.

diff --git a/server/sock.c b/server/sock.c
index 72cea89..c5f41e4 100644
--- a/server/sock.c
+++ b/server/sock.c
@@ -69,8 +69,7 @@
     no_satisfied,                 /* satisfied */
     sock_get_poll_events,         /* get_poll_events */
     sock_poll_event,              /* poll_event */
-    sock_get_fd,                  /* get_read_fd */
-    sock_get_fd,                  /* get_write_fd */
+    sock_get_fd,                  /* get_fd */
     no_flush,                     /* flush */
     no_get_file_info,             /* get_file_info */
     sock_destroy                  /* destroy */