server: use fio_gettime() for timeout variables

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/server.c b/server.c
index 3171979..c249849 100644
--- a/server.c
+++ b/server.c
@@ -333,7 +333,7 @@
 
 	reply = calloc(1, sizeof(*reply));
 	INIT_FLIST_HEAD(&reply->list);
-	gettimeofday(&reply->tv, NULL);
+	fio_gettime(&reply->tv, NULL);
 	reply->saved_tag = tag;
 	reply->opcode = opcode;