(4ad359147) Fix an index out of array exception when trying to set the update order (draw order) while the updateList contains no elements.

Barotrauma/BarotraumaClient/Source/GUI/GUI.cs

@@ -533,14 +533,19 @@ namespace Barotrauma
             if (list.Count == 0) { return; }
             foreach (var item in list)
             {
-                int i = updateList.Count - 1;
-                while (updateList[i].UpdateOrder > item.UpdateOrder)
+                int index = 0;
+                if (updateList.Count > 0)
                 {
-                    i--;
+                    index = updateList.Count - 1;
+                    while (updateList[index].UpdateOrder > item.UpdateOrder)
+                    {
+                        index--;
+                        if (index == 0) { break; }
+                    }
                 }
                 if (!updateListSet.Contains(item))
                 {
-                    updateList.Insert(Math.Max(i, 0), item);
+                    updateList.Insert(index, item);
                     updateListSet.Add(item);
                 }
             }
@@ -651,6 +656,7 @@ namespace Barotrauma
                 msg.Timer -= deltaTime;                
                 msg.Pos += msg.Velocity * deltaTime;                
             }
+        }
 
             messages.RemoveAll(m => m.Timer <= 0.0f);
         }
@@ -724,6 +730,10 @@ namespace Barotrauma
                 Vector2 textSize = font.MeasureString(text);
                 DrawRectangle(sb, pos - Vector2.One * backgroundPadding, textSize + Vector2.One * 2.0f * backgroundPadding, (Color)backgroundColor, true);
             }
+            else
+            {
+                sb.Draw(t, new Rectangle(rect.X + thickness, rect.Y, rect.Width - thickness * 2, thickness), null, clr, 0.0f, Vector2.Zero, SpriteEffects.None, depth);
+                sb.Draw(t, new Rectangle(rect.X + thickness, rect.Y + rect.Height - thickness, rect.Width - thickness * 2, thickness), null, clr, 0.0f, Vector2.Zero, SpriteEffects.None, depth);
 
             font.DrawString(sb, text, pos, color);
         }