message: Use c_void instead of ()
diff: @@ -206,7 +206,6 @@ pub mod types {
  use std::ffi::CStr;
  use super::*;
  use libc;
  -
  pub type c_void = libc::c_void;
  pub type c_char = libc::c_char;
  pub type uint32_t = libc::uint32_t;
  @@ -215,19 +214,19 @@ pub mod types {
  pub type uint8_t = libc::uint8_t;
  pub type c_float = libc::c_float;
  pub type int32_t = libc::int32_t;
  - pub type Display = *const ();
  - pub type Window = *const ();
  - pub type VisualID = *const ();
  - pub type xcb_connection_t = *const ();
  - pub type xcb_window_t = *const ();
  - pub type xcb_visualid_t = *const ();
  - pub type MirConnection = *const ();
  - pub type MirSurface = *const ();
  - pub type HINSTANCE = *const ();
  - pub type HWND = *const ();
  - pub type ANativeWindow = *const ();
  - pub type wl_display = *const ();
  - pub type wl_surface = *const ();
  + pub type Display = *const c_void;
  + pub type Window = *const c_void;
  + pub type VisualID = *const c_void;
  + pub type xcb_connection_t = *const c_void;
  + pub type xcb_window_t = *const c_void;
  + pub type xcb_visualid_t = *const c_void;
  + pub type MirConnection = *const c_void;
  + pub type MirSurface = *const c_void;
  + pub type HINSTANCE = *const c_void;
  + pub type HWND = *const c_void;
  + pub type ANativeWindow = *const c_void;
  + pub type wl_display = *const c_void;
  + pub type wl_surface = *const c_void;
  pub type Flags = uint32_t;
  pub type Bool32 = uint32_t;
  