SWIG 3 version compat hack
https://jira.kopano.io/browse/KC-1680

Index: swig/python/kopano/kopano/folder.py
--- swig/python/kopano/kopano/folder.py.orig
+++ swig/python/kopano/kopano/folder.py
@@ -1204,7 +1204,7 @@ class Folder(Properties):
 
     def search_wait(self):
         while True:
-            (restrict, _, state) = self.mapiobj.GetSearchCriteria(0)
+            state = self.mapiobj.GetSearchCriteria(0)[-1]
             if not state & SEARCH_REBUILD:
                 break
 
