Ignore OTR policy if message meant for a groupchat

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

mod_otr.lua

@@ -57,8 +57,9 @@ local function check_message_otr(event)
 	jid = strip_full_jid(stanza.attr.from);
 
 	-- Continue processing the signal if no body is found since
-	-- we can't enforce OTR with an empty payload.
-	if body == nil then
+	-- we can't enforce OTR with an empty payload or if the message
+	-- is meant for a groupchat.
+	if body == nil or stanza.attr.type == "groupchat" then
 		return nil;
 	end