[PATCH remotefilelog-ext] cdatapack: include sys/types.h for off_t

[Augie Fackler]

# HG changeset patch
# User Augie Fackler <augie at google.com>
# Date 1480371885 18000
#      Mon Nov 28 17:24:45 2016 -0500
# Node ID 26bc28cb6f435212bf1a3a120e21175754a7af5e
# Parent  214ac612b5f1555c52ed2c3c4f70551bce880346
cdatapack: include sys/types.h for off_t

This isn't required on all systems, but I ran into one where it
was. Sigh. I've struggled a bit to find proper documentation of this,
and this is the best I could do:
http://pubs.opengroup.org/onlinepubs/009696799/basedefs/sys/types.h.html

diff --git a/cdatapack/cdatapack.h b/cdatapack/cdatapack.h
--- a/cdatapack/cdatapack.h
+++ b/cdatapack/cdatapack.h
@@ -10,6 +10,7 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <stdbool.h>
+#include <sys/types.h>
 
 #define NODE_SZ 20