malloc_zone darwin build fix.

closes #2484

Author: devnexen

src/unix/bsd/apple/b64/x86_64/mod.rs

@@ -110,62 +110,62 @@ s! {
     pub struct malloc_zone_t {
         _reserved1: *mut ::c_void,
         _reserved2: *mut ::c_void,
-        pub size: Option<unsafe extern "C" fn(
+        pub size: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             ptr: *const ::c_void,
         ) -> ::size_t>,
-        pub malloc: Option<unsafe extern "C" fn(
+        pub malloc: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             size: ::size_t,
         ) -> *mut ::c_void>,
-        pub calloc: Option<unsafe extern "C" fn(
+        pub calloc: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             num_items: ::size_t,
             size: ::size_t,
         ) -> *mut ::c_void>,
-        pub valloc: Option<unsafe extern "C" fn(
+        pub valloc: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             size: ::size_t
         ) -> *mut ::c_void>,
-        pub free: Option<unsafe extern "C" fn(
+        pub free: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             ptr: *mut ::c_void
         )>,
-        pub realloc: Option<unsafe extern "C" fn(
+        pub realloc: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             ptr: *mut ::c_void,
             size: ::size_t,
         ) -> *mut ::c_void>,
-        pub destroy: Option<unsafe extern "C" fn(zone: *mut malloc_zone_t)>,
+        pub destroy: ::Option<unsafe extern "C" fn(zone: *mut malloc_zone_t)>,
         pub zone_name: *const ::c_char,
-        pub batch_malloc: Option<unsafe extern "C" fn(
+        pub batch_malloc: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             size: ::size_t,
             results: *mut *mut ::c_void,
             num_requested: ::c_uint,
         ) -> ::c_uint>,
-        pub batch_free: Option<unsafe extern "C" fn(
+        pub batch_free: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             to_be_freed: *mut *mut ::c_void,
             num_to_be_freed: ::c_uint,
         )>,
         pub introspect: *mut malloc_introspection_t,
         pub version: ::c_uint,
-        pub memalign: Option<unsafe extern "C" fn(
+        pub memalign: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             alignment: ::size_t,
             size: ::size_t,
         ) -> *mut ::c_void>,
-        pub free_definite_size: Option<unsafe extern "C" fn(
+        pub free_definite_size: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             ptr: *mut ::c_void,
             size: ::size_t
         )>,
-        pub pressure_relief: Option<unsafe extern "C" fn(
+        pub pressure_relief: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             goal: ::size_t,
         ) -> ::size_t>,
-        pub claimed_address: Option<unsafe extern "C" fn(
+        pub claimed_address: ::Option<unsafe extern "C" fn(
             zone: *mut malloc_zone_t,
             ptr: *mut ::c_void,
         ) -> ::boolean_t>,