Use `JSON::stringify` where possible

core/variant/variant.cpp

@@ -1932,8 +1932,7 @@ String Variant::stringify(int recursion_count) const {
 }
 
 String Variant::to_json_string() const {
-	JSON json;
-	return json.stringify(*this);
+	return JSON::stringify(*this);
 }
 
 Variant::operator Vector2() const {

editor/debugger/debug_adapter/debug_adapter_protocol.cpp

@@ -656,7 +656,7 @@ int DebugAdapterProtocol::parse_variant(const Variant &p_var) {
 
 bool DebugAdapterProtocol::process_message(const String &p_text) {
 	JSON json;
-	ERR_FAIL_COND_V_MSG(json.parse(p_text) != OK, true, "Mal-formed message!");
+	ERR_FAIL_COND_V_MSG(json.parse(p_text) != OK, true, "Malformed message!");
 	Dictionary params = json.get_data();
 	bool completed = true;
 

editor/editor_build_profile.cpp

@@ -255,8 +255,7 @@ Error EditorBuildProfile::save_to_file(const String &p_path) {
 	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::WRITE);
 	ERR_FAIL_COND_V_MSG(f.is_null(), ERR_CANT_CREATE, "Cannot create file '" + p_path + "'.");
 
-	JSON json;
-	String text = json.stringify(data, "\t");
+	String text = JSON::stringify(data, "\t");
 	f->store_string(text);
 	return OK;
 }

modules/mono/class_db_api_json.cpp

@@ -227,8 +227,7 @@ void class_db_api_to_json(const String &p_output_file, ClassDB::APIType p_api) {
 
 	Ref<FileAccess> f = FileAccess::open(p_output_file, FileAccess::WRITE);
 	ERR_FAIL_COND_MSG(f.is_null(), "Cannot open file '" + p_output_file + "'.");
-	JSON json;
-	f->store_string(json.stringify(classes_dict, "\t"));
+	f->store_string(JSON::stringify(classes_dict, "\t"));
 
 	print_line(String() + "ClassDB API JSON written to: " + ProjectSettings::get_singleton()->globalize_path(p_output_file));
 }

platform/android/export/export_plugin.cpp

@@ -2639,8 +2639,7 @@ Error EditorExportPlatformAndroid::export_project_helper(const Ref<EditorExportP
 			}
 			if (user_data.libs.size() > 0) {
 				Ref<FileAccess> fa = FileAccess::open(GDNATIVE_LIBS_PATH, FileAccess::WRITE);
-				JSON json;
-				fa->store_string(json.stringify(user_data.libs, "\t"));
+				fa->store_string(JSON::stringify(user_data.libs, "\t"));
 			}
 		} else {
 			print_verbose("Saving apk expansion file..");