Update src/ImageSharp/Formats/Png/PngEncoderCore.cs

Co-authored-by: Günther Foidl <gue@korporal.at>
4 years ago · 6745cae8b6
1 changed files with 1 additions and 1 deletions
--- a/src/ImageSharp/Formats/Png/PngEncoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngEncoderCore.cs
@ -1336,7 +1336,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
            bitDepth = bits;
        }

-        if (Array.IndexOf(PngConstants.ColorTypes[colorType], bitDepth) == -1)
+        if (Array.IndexOf(PngConstants.ColorTypes[colorType], bitDepth) < 0)
        {
            throw new NotSupportedException("Bit depth is not supported or not valid.");
        }