Merge pull request #65556 from nextcloud/backport/65511/stable32

[stable32] fix(migration): check if deleted_by column exists before trying to add it to files_trash table

Author: AndyScherzinger

apps/files_trashbin/lib/Migration/Version1020Date20240403003535.php

@@ -27,16 +27,17 @@ public function changeSchema(IOutput $output, Closure $schemaClosure, array $opt
 		/** @var ISchemaWrapper $schema */
 		$schema = $schemaClosure();
 
-		if (!$schema->hasTable('files_trash')) {
-			return null;
+		if ($schema->hasTable('files_trash')) {
+			$table = $schema->getTable('files_trash');
+			if (!$table->hasColumn('deleted_by')) {
+				$table->addColumn('deleted_by', Types::STRING, [
+					'notnull' => false,
+					'length' => 64,
+				]);
+				return $schema;
+			}
 		}
 
-		$table = $schema->getTable('files_trash');
-		$table->addColumn('deleted_by', Types::STRING, [
-			'notnull' => false,
-			'length' => 64,
-		]);
-
-		return $schema;
+		return null;
 	}
 }