add default to $cacheBaseDir and fix var typo

Author: tanganellilore

lib/private/Files/Mount/CacheMountProvider.php

@@ -63,13 +63,13 @@ public function getMountsForUser(IUser $user, IStorageFactory $loader) {
             $mounts[] = new MountPoint('\OC\Files\Storage\Local', '/' . $user->getUID() . '/cache', ['datadir' => $cacheDir], $loader, null, null, self::class);
 		}
 
-        $uploadsPath = $this->config->getSystemValueString('uploads_path', '');
+        $uploadsPath = $this->config->getSystemValueString('uploads_path', $this->config->getSystemValueString('cache_path', ''));
         if ($uploadsPath !== '') {
             $uploadsDir = rtrim($uploadsPath, '/') . '/' . $user->getUID();
             if (!file_exists($uploadsDir)) {
                 mkdir($uploadsDir, 0770, true);
             }
-            $mounts[] = new MountPoint('\OC\Files\Storage\Local', '/' . $user->getUID() . '/uploads', ['datadir' => uploadsDir . '/uploads'], $loader, null, null, self::class);
+            $mounts[] = new MountPoint('\OC\Files\Storage\Local', '/' . $user->getUID() . '/uploads', ['datadir' => $uploadsDir . '/uploads'], $loader, null, null, self::class);
         }
 
         return $mounts;