AIX fixes

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/server.c b/server.c
index 07f3216..29e2387 100644
--- a/server.c
+++ b/server.c
@@ -8,7 +8,7 @@
 #include <sys/poll.h>
 #include <sys/types.h>
 #include <sys/wait.h>
-#include <sys/mman.h>
+#include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netdb.h>