[Gtk2hs-commit] (main branch): Fix bug in TreeStore on empty stores.

[Axel S. <A....@ke...>]

Mon Jul 16 05:37:08 PDT 2007  A....@ke...
  * Fix bug in TreeStore on empty stores.
  This fixes a bug when running e.g. treeModelIterNChildren store Nothing when
  store is an empty TreeStore.

    hunk ./gtk/Graphics/UI/Gtk/ModelView/TreeStore.hs 322
    -checkSuccess depth iter cache = (cmp cur iter && not (null sibs), cache')
    +checkSuccess depth iter cache = case advanceCache depth iter cache of
    +    cache'@((cur,sibs):_) -> (cmp cur iter && not (null sibs), cache')
    +    [] -> (False, [])