Input Roll - fix horizontal scroll bar placement logic

BizHawk.Client.EmuHawk/tools/TAStudio/InputRoll.cs

@@ -1257,6 +1257,7 @@ namespace BizHawk.Client.EmuHawk
 				}
 				else
 				{
+					VBar.Location = new Point(0, Height - 17);
 					HBar.Size = new Size(Width, HBar.Height);
 				}
 			}