Fixes to scrollbar

modules/client_entergame/characterlist.lua

@@ -244,7 +244,7 @@ function CharacterList.hide()
 end
 
 function CharacterList.showAgain()
-  if characterList:hasChildren() then
+  if characterList and characterList:hasChildren() then
     CharacterList.show()
   end
 end

modules/corelib/ui/uiscrollbar.lua

@@ -168,7 +168,7 @@ function UIScrollBar:setValue(value)
   self.value = value
   updateSlider(self)
   if self.setupDone then
-    signalcall(self.onValueChange, self, value, delta)
+    signalcall(self.onValueChange, self, math.round(value), delta)
   end
 end
 
@@ -203,6 +203,6 @@ end
 
 function UIScrollBar:getMaximum() return self.maximum end
 function UIScrollBar:getMinimum() return self.minimum end
-function UIScrollBar:getValue() return self.value end
+function UIScrollBar:getValue() return math.round(self.value) end
 function UIScrollBar:getStep() return self.step end
 function UIScrollBar:getOrientation() return self.orientation end

modules/game_interface/gameinterface.lua

@@ -487,7 +487,7 @@ function moveStackableItem(item, toPos)
 
   scrollbar.onValueChange = function(self, value)
     spinbox.onValueChange = nil
-    spinbox:setValue(math.round(value))
+    spinbox:setValue(value)
     spinbox.onValueChange = spinBoxValueChange
   end