dm3q: Sync extract scripts with templates

Change-Id: I98a36854c5a0c0390592911bb2558b34eff77efc

extract-files.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 #
-# Copyright (C) 2016 The CyanogenMod Project
-# Copyright (C) 2017-2020 The LineageOS Project
-#
+# SPDX-FileCopyrightText: 2016 The CyanogenMod Project
+# SPDX-FileCopyrightText: 2017-2024 The LineageOS Project
 # SPDX-License-Identifier: Apache-2.0
 #
 
@@ -11,6 +10,10 @@ function blob_fixup() {
     esac
 }
 
+function blob_fixup_dry() {
+    blob_fixup "$1" ""
+}
+
 # If we're being sourced by the common script that we called,
 # stop right here. No need to go down the rabbit hole.
 if [ "${BASH_SOURCE[0]}" != "${0}" ]; then