Fix equality operators

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbWorkingSpace.cs

@@ -50,7 +50,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         /// </returns>
         public static bool operator ==(RgbWorkingSpace left, RgbWorkingSpace right)
         {
-            return Equals(left, right);
+            return left.Equals(right);
         }
 
         /// <summary>
@@ -67,7 +67,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         /// </returns>
         public static bool operator !=(RgbWorkingSpace left, RgbWorkingSpace right)
         {
-            return !Equals(left, right);
+            return !left.Equals(right);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/ImageProperty.cs

@@ -71,7 +71,12 @@ namespace SixLabors.ImageSharp.MetaData
         /// </returns>
         public static bool operator ==(ImageProperty left, ImageProperty right)
         {
-            return Equals(left, right);
+            if (ReferenceEquals(left, right))
+            {
+                return true;
+            }
+
+            return left.Equals(right);
         }
 
         /// <summary>
@@ -90,7 +95,7 @@ namespace SixLabors.ImageSharp.MetaData
         /// </returns>
         public static bool operator !=(ImageProperty left, ImageProperty right)
         {
-            return !Equals(left, right);
+            return !(left == right);
         }
 
         /// <summary>

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

@@ -188,7 +188,12 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         /// </returns>
         public static bool operator ==(ExifValue left, ExifValue right)
         {
-            return ExifValue.Equals(left, right);
+            if (ReferenceEquals(left, right))
+            {
+                return true;
+            }
+
+            return left.Equals(right);
         }
 
         /// <summary>
@@ -205,7 +210,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         /// </returns>
         public static bool operator !=(ExifValue left, ExifValue right)
         {
-            return !ExifValue.Equals(left, right);
+            return !(left == right);
         }
 
         /// <inheritdoc />

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

@@ -87,7 +87,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         /// <returns>The <see cref="bool"/></returns>
         public static bool operator ==(Rational left, Rational right)
         {
-            return Rational.Equals(left, right);
+            return left.Equals(right);
         }
 
         /// <summary>
@@ -98,7 +98,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         /// <returns>The <see cref="bool"/></returns>
         public static bool operator !=(Rational left, Rational right)
         {
-            return !Rational.Equals(left, right);
+            return !left.Equals(right);
         }
 
         /// <summary>

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

@@ -87,7 +87,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         /// <returns>The <see cref="bool"/></returns>
         public static bool operator ==(SignedRational left, SignedRational right)
         {
-            return SignedRational.Equals(left, right);
+            return left.Equals(right);
         }
 
         /// <summary>
@@ -98,7 +98,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         /// <returns>The <see cref="bool"/></returns>
         public static bool operator !=(SignedRational left, SignedRational right)
         {
-            return !SignedRational.Equals(left, right);
+            return !left.Equals(right);
         }
 
         /// <summary>

tests/ImageSharp.Tests/Formats/Jpg/Utils/LibJpegTools.SpectralData.cs

@@ -137,12 +137,17 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg.Utils
 
             public static bool operator ==(SpectralData left, SpectralData right)
             {
-                return Object.Equals(left, right);
+                if (ReferenceEquals(left, right))
+                {
+                    return true;
+                }
+
+                return left.Equals(right);
             }
 
             public static bool operator !=(SpectralData left, SpectralData right)
             {
-                return !Object.Equals(left, right);
+                return !(left == right);
             }
         }
     }