FIX: crash due to outdated state of a dropdown (#1116)

Author: Paliak

src/Modules/Build.lua

@@ -1394,12 +1394,12 @@ function buildMode:RefreshSkillSelectControls(controls, mainGroup, suffix)
 	for i, socketGroup in pairs(self.skillsTab.socketGroupList) do
 		controls.mainSocketGroup.list[i] = { val = i, label = socketGroup.displayLabel }
 	end
-  controls.mainSocketGroup:CheckDroppedWidth(true)
+	controls.mainSocketGroup:CheckDroppedWidth(true)
 	if controls.warnings then controls.warnings.shown = #controls.warnings.lines > 0 end
+	controls.statSet.shown = false
 	if #controls.mainSocketGroup.list == 0 then
 		controls.mainSocketGroup.list[1] = { val = 1, label = "<No skills added yet>" }
 		controls.mainSkill.shown = false
-		controls.statSet.shown = false
 		controls.mainSkillPart.shown = false
 		controls.mainSkillMineCount.shown = false
 		controls.mainSkillStageCount.shown = false