configitems: register the 'largefiles.usercache' config

hgext/largefiles/__init__.py

@@ -136,6 +136,10 b" configitem('largefiles', 'minsize',"
 configitem('largefiles', 'patterns',
     default=list,
 )
+configitem('largefiles', 'usercache',
+    default=None,
+)
+
 reposetup = reposetup.reposetup
 
 def featuresetup(ui, supported):

hgext/largefiles/lfutil.py

@@ -71,7 +71,7 b' def usercachepath(ui, hash):'
 
 def _usercachedir(ui):
     '''Return the location of the "global" largefiles cache.'''
-    path = ui.configpath(longname, 'usercache', None)
+    path = ui.configpath(longname, 'usercache')
     if path:
         return path
     if pycompat.iswindows: