sfinv: Fix wrong tab being highlighted

rubenwardy · paramat · commit a16413f96c8d · 2017-03-07T06:43:18.000Z
Thank you to @ForbiddenJ for finding cause of the issue.
diff --git a/mods/sfinv/api.lua b/mods/sfinv/api.lua
@@ -70,7 +70,7 @@ function sfinv.get_formspec(player, context)
 			nav[#nav + 1] = pdef.title
 			nav_ids[#nav_ids + 1] = pdef.name
 			if pdef.name == context.page then
-				current_idx = i
+				current_idx = #nav_ids
 			end
 		end
 	end
