Goldmine

2.5.8
- Fix: Lua error "attempt to compare a secret string value" in Tooltips.lua. It occurred when hovering players in Mythic+ or combat, because the game hides the unit GUID there.
- Player tooltips: if the game does not provide a player's GUID, the item level is simply skipped for that tooltip instead of causing an error.
- Inspect queue: unit GUIDs are now read safely everywhere (item level lookup, inspect requests, inspect results).