component (file sharing): fix retrieving owner from jid when user part is not specified

sat/plugins/plugin_comp_file_sharing.py

@@ -519,7 +519,10 @@ class FileSharing:
     ):
         """This method retrieve a file on request, and send if after checking permissions"""
         peer_jid = session["peer_jid"]
-        owner = client.getOwnerFromJid(session['local_jid'])
+        if session['local_jid'].user:
+            owner = client.getOwnerFromJid(session['local_jid'])
+        else:
+            owner = peer_jid
         try:
             found_files = yield self.host.memory.getFiles(
                 client,