only process args that exist

ASTERISK-18395 ........ Merged revisions 341809 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 341810 from http://svn.asterisk.org/svn/asterisk/branches/10 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@341811 65c4cc65-6c06-0410-ace0-fbb531ad65f3
14 years ago · f39cbc004d
parent 9c7a017540
commit f39cbc004d
1 changed files with 1 additions and 1 deletions
--- a/pbx/pbx_lua.c
+++ b/pbx/pbx_lua.c
@ -669,7 +669,7 @@ static void lua_concat_args(lua_State *L, int start, int nargs) {
 	int concat = 0;
 	int i = start + 1;

-	if (!lua_isnil(L, start)) {
+	if (start <= nargs && !lua_isnil(L, start)) {
 		lua_pushvalue(L, start);
 		concat += 1;
 	}