Creating FilterPanel.value_map as an empty table and then creating it again as a populated table is just silly. Fixed.

diff --git a/Interface/FilterMenus.lua b/Interface/FilterMenus.lua
index c35e055..0d46144 100644
--- a/Interface/FilterMenus.lua
+++ b/Interface/FilterMenus.lua
@@ -344,8 +344,6 @@ function private.InitializeFilterPanel()

 	FilterPanel:SetScript("OnShow", UpdateFilterMarks)

-	FilterPanel.value_map = {}
-
 	function FilterPanel:CreateSubMenu(name)
 		local submenu = CreateFrame("Frame", nil, self)