Use local ffi_metatype instead of ffi.metatype

Author: gilzoide

src/godot_basis.lua

@@ -170,7 +170,7 @@ methods.FLIP_Z = ffi_new('godot_basis', { elements = { 1, 0, 0, 0, 1, 0, 0, 0, -
 
 --- Metamethods
 -- @section metamethods
-Basis = ffi.metatype('godot_basis', {
+Basis = ffi_metatype('godot_basis', {
 	--- Basis constructor, called by the idiom `Basis(...)`.
 	--
 	-- * `Basis()`: `IDENTITY` basis matrix

src/godot_class.lua

@@ -171,7 +171,7 @@ local ClassWrapper_cache = setmetatable({}, {
 --- MethodBind metatype, wrapper for `godot_method_bind`.
 -- These are returned by `ClassWrapper:__index` and GDNative's `godot_method_bind_get_method`.
 -- @type MethodBind
-local MethodBind = ffi.metatype('godot_method_bind', {
+local MethodBind = ffi_metatype('godot_method_bind', {
 	--- Calls the method in `object`.
 	-- @function __call
 	-- @tparam Object object

src/godot_quat.lua

@@ -121,7 +121,7 @@ methods.IDENTITY = ffi_new('godot_quat', { elements = { 0, 0, 0, 1 } })
 
 --- Metamethods
 -- @section metamethods
-Quat = ffi.metatype('godot_quat', {
+Quat = ffi_metatype('godot_quat', {
 	--- Quat constructor, called by the idiom `Quat(...)`.
 	--
 	-- * `Quat()`: `IDENTITY` quaternion (`Quat() == Quat(0, 0, 0, 1)`)

src/godot_string_name.lua

@@ -46,7 +46,7 @@ local methods = {
 	-- @return[type=const void *]
 	get_data_unique_pointer = api.godot_string_name_get_data_unique_pointer,
 }
-StringName = ffi.metatype('godot_string_name', {
+StringName = ffi_metatype('godot_string_name', {
 	--- StringName constructor, called by the idiom `StringName(name)`.
 	-- @function __new
 	-- @param[opt=""] name  Name, stringified with `GD.str`