TOC settings: fix possible crash (#7434)

3 years ago · 932df881b4
parent 1cd478fd70
commit 932df881b4
1 changed files with 3 additions and 1 deletions
--- a/frontend/apps/reader/modules/readertoc.lua
+++ b/frontend/apps/reader/modules/readertoc.lua
@ -961,7 +961,9 @@ See Style tweaks → Miscellaneous → Alternative ToC hints.]]),
                    break
                end
            end
-            toc_ticks_levels[#toc_ticks_levels].separator = true
+            if #toc_ticks_levels > 0 then
+                toc_ticks_levels[#toc_ticks_levels].separator = true
+            end
            table.insert(toc_ticks_levels, {
                text = _("Bind chapter navigation to ticks"),
                help_text = _([[Entries from ToC levels that are ignored in the progress bars will still be used for chapter navigation and 'page/time left until next chapter' in the footer.