jid.split(): Return nil when passed nil

diff --git a/util/jid.lua b/util/jid.lua
index b7116fdfad5ce7983ffa78890cada05d5dcc0e4f..28dd1a926868b9ffc934522baf9a41cb4c2d8c4b 100644 (file)
--- a/util/jid.lua
+++ b/util/jid.lua
@@ -4,6 +4,7 @@ local match = string.match;
 module "jid"
 
 function split(jid)
+       if not jid then return nil; end
        local node = match(jid, "^([^@]+)@");
        local server = (node and match(jid, ".-@([^@/]+)")) or match(jid, "^([^@/]+)");
        local resource = match(jid, "/(.+)$");