# HG changeset patch
# User Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
# Date 1518859939 -3600
#      Thu Feb 1 17:29:41 2018 +0100
# Node ID 8fe60cce419244a8265a24c981d359865ef301c7
# Parent  a966a21836e807f718740404a0e9220051ceed93
util.stanza: Fix the #981 infinite loop in stanza:maptags().

diff -r c63db78f4ae0 util/stanza.lua
--- a/util/stanza.lua	Sat Sep 09 14:45:23 2017 +0100
+++ b/util/stanza.lua	Thu Feb 01 17:29:01 2018 +0100
@@ -157,7 +157,7 @@
 	local n_children, n_tags = #self, #tags;
 
 	local i = 1;
-	while curr_tag <= n_tags and n_tags > 0 do
+	while curr_tag <= n_tags and n_tags > 0 and i < n_children do
 		if self[i] == tags[curr_tag] then
 			local ret = callback(self[i]);
 			if ret == nil then