a small fix for a crash that occurs when compiling AEL with global vars

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@120828 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/pbx.c

@@ -7901,7 +7901,7 @@ int pbx_builtin_setvar_multiple(struct ast_channel *chan, void *vdata)
 			pbx_builtin_setvar_helper(chan, pair.name, pair.value);
 			if (strchr(pair.name, ' '))
 				ast_log(LOG_WARNING, "Please avoid unnecessary spaces on variables as it may lead to unexpected results ('%s' set to '%s').\n", pair.name, pair.value);
-		} else if (chan) {
+		} else if (!chan) {
 			ast_log(LOG_WARNING, "MSet: ignoring entry '%s' with no '='\n", pair.name);
 		} else {
 			ast_log(LOG_WARNING, "MSet: ignoring entry '%s' with no '=' (in %s@%s:%d\n", pair.name, chan->exten, chan->context, chan->priority);