[PATCH] fix warning on 32-bit systems

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Casting a uint64_t to a pointer emits a warning on 32 bit systems.
This patch fixes the warning, but seems a bit suspicious. Should the
type of 'tag' be uintptr_t ?

--

diff --git a/server.c b/server.c
index 9537c96..3c52083 100644
--- a/server.c
+++ b/server.c
@@ -293,7 +293,7 @@ struct fio_net_cmd *fio_net_recv_cmd(int sk)

 static void add_reply(uint64_t tag, struct flist_head *list)
 {
-       struct fio_net_cmd_reply *reply = (struct fio_net_cmd_reply *) tag;
+       struct fio_net_cmd_reply *reply = (struct fio_net_cmd_reply *)
(uintptr_t)tag;

        flist_add_tail(&reply->list, list);
 }
@@ -313,7 +313,7 @@ static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)

 static void free_reply(uint64_t tag)
 {
-       struct fio_net_cmd_reply *reply = (struct fio_net_cmd_reply *) tag;
+       struct fio_net_cmd_reply *reply = (struct fio_net_cmd_reply *)
(uintptr_t)tag;

        free(reply);
 }
--
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