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Fix undefined index and consequential damages in versions code 

If the user has no space and there are no versions, there won't be an
`all` index in the versions entry. Hence this triggers a warning and
becomes `null`, afterwards `count`, `foreach` and friends will happily
throw even more warnings and errors because they don't want to play with
`null`. Thus adding a fallback to an empty array.

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
This commit is contained in:
Christoph Wurst 2020-10-08 19:52:29 +02:00 committed by backportbot[bot]
parent ac465f2c87
commit 92ac576e1c
1 changed files with 1 additions and 1 deletions
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2
apps/files_versions/lib/Storage.php
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@ -776,7 +776,7 @@ class Storage {
// if still not enough free space we rearrange the versions from all files
if ($availableSpace <= 0) {
$result = Storage::getAllVersions($uid);
$allVersions = $result['all'];
$allVersions = $result['all'] ?? [];
foreach ($result['by_file'] as $versions) {
list($toDeleteNew, $size) = self::getExpireList($time, $versions, $availableSpace <= 0);