Tweak bounds clamping

Author: JimBobSquarePants

src/ImageSharp/Formats/AnimationUtilities.cs

@@ -148,11 +148,12 @@ public static (bool Difference, Rectangle Bounds) DeDuplicatePixels<TPixel>(
             PixelOperations<TPixel>.Instance.FromVector4Destructive(configuration, result, resultFrame.DangerousGetPixelRowMemory(y).Span, PixelConversionModifiers.Scale);
         }
 
-        Rectangle bounds = Rectangle.FromLTRB(
-            left = Numerics.Clamp(left, 0, resultFrame.Width - 1),
-            top = Numerics.Clamp(top, 0, resultFrame.Height - 1),
-            Numerics.Clamp(right, left + 1, resultFrame.Width),
-            Numerics.Clamp(bottom, top + 1, resultFrame.Height));
+        left = Math.Max(0, Math.Min(left, resultFrame.Width - 1));
+        top = Math.Max(0, Math.Min(top, resultFrame.Height - 1));
+        right = Math.Max(left + 1, Math.Min(right, resultFrame.Width));
+        bottom = Math.Max(top + 1, Math.Min(bottom, resultFrame.Height));
+
+        Rectangle bounds = Rectangle.FromLTRB(left, top, right, bottom);
 
         // Webp requires even bounds
         if (clampingMode == ClampingMode.Even)