Use is check.

6 years ago · 50925b988e
1 changed files with 1 additions and 1 deletions
--- a/src/Avalonia.Visuals/Media/Color.cs
+++ b/src/Avalonia.Visuals/Media/Color.cs
@ -127,7 +127,7 @@ namespace Avalonia.Media
        {
            color = default;

-            if (s == null)
+            if (s is null)
            {
                return false;
            }