std: Fix double free in uv

Author: brson

src/libstd/uv_ll.rs

@@ -642,7 +642,7 @@ extern mod rustrt {
     fn rust_uv_addrinfo_as_sockaddr_in(input: *addrinfo) -> *sockaddr_in;
     fn rust_uv_addrinfo_as_sockaddr_in6(input: *addrinfo) -> *sockaddr_in6;
     fn rust_uv_malloc_buf_base_of(sug_size: libc::size_t) -> *u8;
-    fn rust_uv_free_base_of_buf(+buf: uv_buf_t);
+    fn rust_uv_free_base_of_buf(++buf: uv_buf_t);
     fn rust_uv_get_stream_handle_from_connect_req(
         connect_req: *uv_connect_t)
         -> *uv_stream_t;
@@ -661,8 +661,8 @@ extern mod rustrt {
     fn rust_uv_get_data_for_req(req: *libc::c_void) -> *libc::c_void;
     fn rust_uv_set_data_for_req(req: *libc::c_void,
                                 data: *libc::c_void);
-    fn rust_uv_get_base_from_buf(+buf: uv_buf_t) -> *u8;
-    fn rust_uv_get_len_from_buf(+buf: uv_buf_t) -> libc::size_t;
+    fn rust_uv_get_base_from_buf(++buf: uv_buf_t) -> *u8;
+    fn rust_uv_get_len_from_buf(++buf: uv_buf_t) -> libc::size_t;
 
     // sizeof testing helpers
     fn rust_uv_helper_uv_tcp_t_size() -> libc::c_uint;