Fix EnumHelper<T>.IsDefined

src/ImageSharp/MetaData/Profiles/Exif/ExifReader.cs

@@ -567,8 +567,8 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
             [MethodImpl(InliningOptions.ShortMethod)]
             public static bool IsDefined(int value)
             {
-                return Array.BinarySearch(Values, 0, Values.Length, value) > 0;
+                return Array.BinarySearch(Values, value) >= 0;
             }
         }
     }
-}
+}