fix scrollbar size when padding is non 0

Author: brachy84

src/main/java/com/cleanroommc/modularui/CommonProxy.java

@@ -42,8 +42,7 @@ void preInit(FMLPreInitializationEvent event) {
         GuiFactories.init();
     }
 
-    void postInit(FMLPostInitializationEvent event) {
-    }
+    void postInit(FMLPostInitializationEvent event) {}
 
     void onServerLoad(FMLServerStartingEvent event) {
         event.registerServerCommand(new ItemEditorGui.Command());

src/main/java/com/cleanroommc/modularui/widget/scroll/ScrollData.java

@@ -142,7 +142,7 @@ public final int getFullVisibleSize(ScrollArea area) {
     }
 
     public final int getFullVisibleSize(ScrollArea area, boolean isOtherActive) {
-        int s = getRawVisibleSize(area);
+        int s = getRawFullVisibleSize(area);
         ScrollData data = getOtherScrollData(area);
         if (data != null && (isOtherActive || data.isScrollBarActive(area, true))) {
             s -= data.getThickness();