From 561e5d737befb5b7e190ecd84059ff2ff2581341 Mon Sep 17 00:00:00 2001
From: Matrix <113445886@qq.com>
Date: Mon, 9 Apr 2018 11:11:21 +0800
Subject: [PATCH] fix build fail with msvc

---
 src/bsonc.rs | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/bsonc.rs b/src/bsonc.rs
index 45bf2d6..e2034ea 100644
--- a/src/bsonc.rs
+++ b/src/bsonc.rs
@@ -2,7 +2,7 @@ use std::ffi::CStr;
 use std::ptr;
 use std::fmt;
 use std::slice;
-use libc::c_void;
+use libc::{c_uint, c_void};
 
 use mongoc::bindings;
 use bson;
@@ -27,12 +27,8 @@ impl Bsonc {
         let mut buffer = Vec::new();
         try!(bson::encode_document(&mut buffer, document));
 
-        let inner = unsafe {
-            bindings::bson_new_from_data(
-                buffer[..].as_ptr(),
-                buffer.len() as u64
-            )
-        };
+        let inner =
+            unsafe { bindings::bson_new_from_data(buffer[..].as_ptr(), buffer.len() as c_uint) };
 
         // Inner will be null if there was an error converting the data.
         // We're assuming the bson crate works and therefore assert here.