[Geary] Crash on empty spelling suggestions

[Mattias Eriksson <snaggen gmail com>]

Hi,

I seems that geary crashes when I click on a word that is misspelled in the composer window but there is not suggestions available. 

I have tracked it down to the following line in the functionon_context_menu in the file composer-window.vala:

            WebKit.ContextMenuAction action = "">

That function in webkit looks like

GtkAction* webkit_context_menu_item_get_action(WebKitContextMenuItem* item)

{

    g_return_val_if_fail(WEBKIT_IS_CONTEXT_MENU_ITEM(item), 0);

    return item->priv->menuItem->gtkAction();

}

And from what I found it seems that item-> is non-null, so my guess is that menuItem is null for some reason. 

Now, I don't know vala and webkit well enough to know the root-cause and find an easy fix for this. Hopefully you guys can fix this in a heartbeat... 

//Snaggen