Update lib/Mount/GroupFolderStorage.php

Agreed. Doing the comparison with the `===` operator is better, because it is stricter. Thank you very much for the suggestion.

Co-authored-by: Ferdinand Thiessen <opensource@fthiessen.de>
Signed-off-by: cfiehe <cfiehe@users.noreply.github.com>

lib/Mount/GroupFolderStorage.php

@@ -11,6 +11,7 @@
 use OC\Files\ObjectStore\ObjectStoreStorage;
 use OC\Files\Storage\Wrapper\Quota;
 use OCP\Files\Cache\ICacheEntry;
+use OCP\Files\Storage\IStorage;
 use OCP\IUser;
 use OCP\IUserSession;
 
@@ -73,7 +74,7 @@ public function getScanner($path = '', $storage = null) {
 	public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
 		if ($sourceStorage->instanceOfStorage(ObjectStoreStorage::class) &&
 			$this->instanceOfStorage(ObjectStoreStorage::class) &&
-			$sourceStorage->getObjectStore()->getStorageId() == $this->getObjectStore()->getStorageId()) {
+			$sourceStorage->getObjectStore()->getStorageId() === $this->getObjectStore()->getStorageId()) {
 				// Do not import any data when source and target object storages are identical.
 				return true;
 		}