Fix PoolByteArray.extend argument name used

Author: gilzoide

CHANGELOG.md

@@ -6,6 +6,9 @@
 - HGDN functions are now compiled with static visibility and unused GDNative
   extensions are excluded, also resulting in smaller dynamic libraries
 
+### Fixed
+- `PoolByteArray.extend` when called with a string argument
+
 
 ## [0.2.0]
 ### Added

src/godot_pool_byte_array.lua

@@ -187,9 +187,9 @@ methods.append = methods.push_back
 methods.extend = function(self, iterable)
 	if type(iterable) == 'string' then
 		local size = #self
-		self:resize(size + #v)
+		self:resize(size + #iterable)
 		local write = self:write()
-		ffi_copy(write:ptr() + size, v, #v)
+		ffi_copy(write:ptr() + size, iterable, #iterable)
 		write:destroy()
 	elseif ffi_istype(PoolByteArray, iterable) then
 		api.godot_pool_byte_array_append_array(self, iterable)

src/godot_string.lua

@@ -783,6 +783,7 @@ end
 --- Converts `size` represented as number of bytes to human-readable format using internationalized set of data size units, namely: B, KiB, MiB, GiB, TiB, PiB, EiB.
 -- Note that the next smallest unit is picked automatically to hold at most 1024 units.
 -- @function humanize_size
+-- @tparam int size
 -- @treturn String
 methods.humanize_size = function(size)
 	return ffi_gc(api.godot_string_humanize_size(size), api.godot_string_destroy)

src/language_gdnative.c

@@ -81,6 +81,7 @@ static int lps_lua_setthreadfunc(lua_State *L) {
 	else {
 		co = lua_newthread(L);
 	}
+	// move callable argument to the new/reused thread
 	lua_pushvalue(L, 2);
 	lua_xmove(L, co, 1);
 	return 1;