fix orphan temp file

Author: ArtificialOwl

lib/Service/PackService.php

@@ -214,6 +214,7 @@ public function packChunk(RestoringPoint $point, RestoringChunk $chunk): void {
 		$temp = $this->wrapPackChunkCompress($point, $temp);
 		$parts = $this->wrapPackExplode($temp);
 		$parts = $this->wrapPackEncrypt($point, $parts);
+
 		$this->wrapStoreParts($point, $chunk, $parts);
 	}
 
@@ -309,6 +310,8 @@ private function wrapPackExplode(string $filename): array {
 			throw $t;
 		}
 
+		unlink($filename);
+
 		return $parts;
 	}