When decompressing compressed messages, dont barf if we try to decompress the same attribute twice

database/migrations/2024_05_13_154308_add_origin_to_netmail.php

@@ -1,28 +0,0 @@
-<?php
-
-use Illuminate\Database\Migrations\Migration;
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
-
-return new class extends Migration
-{
-    /**
-     * Run the migrations.
-     */
-    public function up(): void
-    {
-        Schema::table('netmails', function (Blueprint $table) {
-			$table->string('origin')->nullable();
-        });
-    }
-
-    /**
-     * Reverse the migrations.
-     */
-    public function down(): void
-    {
-        Schema::table('netmail', function (Blueprint $table) {
-			$table->dropColumn('origin');
-        });
-    }
-};