[godot] Fix compilation error on latest 3.5

spine-godot/spine_godot/SpineEditorPlugin.cpp

@@ -71,14 +71,14 @@ Error SpineJsonResourceImportPlugin::import(const String &source_file, const Str
 Error SpineJsonResourceImportPlugin::import(const String &source_file, const String &save_path, const Map<StringName, Variant> &options, List<String> *platform_variants, List<String> *gen_files, Variant *metadata) {
 #endif
 	Ref<SpineSkeletonFileResource> skeleton_file_res(memnew(SpineSkeletonFileResource));
-        Error error = skeleton_file_res->load_from_file(source_file);
-        if (error != OK) return error;
+	Error error = skeleton_file_res->load_from_file(source_file);
+	if (error != OK) return error;
 
 	String file_name = vformat("%s.%s", save_path, get_save_extension());
 #if VERSION_MAJOR > 3
 	error = ResourceSaver::save(skeleton_file_res, file_name);
 #else
-	auto error = ResourceSaver::save(file_name, skeleton_file_res);
+	error = ResourceSaver::save(file_name, skeleton_file_res);
 #endif
 	return error;
 }
@@ -90,13 +90,13 @@ Error SpineBinaryResourceImportPlugin::import(const String &source_file, const S
 #endif
 	Ref<SpineSkeletonFileResource> skeleton_file_res(memnew(SpineSkeletonFileResource));
 	Error error = skeleton_file_res->load_from_file(source_file);
-        if (error != OK) return error;
+    if (error != OK) return error;
 
 	String file_name = vformat("%s.%s", save_path, get_save_extension());
 #if VERSION_MAJOR > 3
 	error = ResourceSaver::save(skeleton_file_res, file_name);
 #else
-	auto error = ResourceSaver::save(file_name, skeleton_file_res);
+	error = ResourceSaver::save(file_name, skeleton_file_res);
 #endif
 	return error;
 }