Fix: os.join created root path in Remove_Empty_Folder if variable 'folder' had a leading slash

deluge/core/torrentmanager.py

@@ -41,6 +41,7 @@ import os
 import time
 import shutil
 import operator
+import re
 
 from twisted.internet import reactor
 from twisted.internet.task import LoopingCall
@@ -741,7 +742,9 @@ class TorrentManager(component.Component):
             raise InvalidTorrentError("torrent_id is not in session")
 
         info = self.torrents[torrent_id].get_status(['save_path'])
-        folder_full_path = os.path.join(info['save_path'], folder)
+        # Regex removes leading slashes that causes join function to ignore save_path
+        folder_full_path = os.path.join(info['save_path'], re.sub("^/*", "", folder))
+        folder_full_path = os.path.normpath(folder_full_path)
 
         try:
             if not os.listdir(folder_full_path):