Add issue reference images

tests/ImageSharp.Tests/Formats/Jpg/JpegDecoderTests.Images.cs

@@ -26,7 +26,9 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                 TestImages.Jpeg.Issues.ExifDecodeOutOfRange694,
                 TestImages.Jpeg.Issues.InvalidEOI695,
                 TestImages.Jpeg.Issues.ExifResizeOutOfRange696,
-                TestImages.Jpeg.Issues.InvalidAPP0721
+                TestImages.Jpeg.Issues.InvalidAPP0721,
+                TestImages.Jpeg.Issues.ExifGetString750Load,
+                TestImages.Jpeg.Issues.ExifGetString750Transform
             };
 
         public static string[] ProgressiveTestJpegs =

tests/ImageSharp.Tests/TestImages.cs

@@ -160,6 +160,8 @@ namespace SixLabors.ImageSharp.Tests
                 public const string OrderedInterleavedProgressive723A = "Jpg/issues/Issue723-Ordered-Interleaved-Progressive-A.jpg";
                 public const string OrderedInterleavedProgressive723B = "Jpg/issues/Issue723-Ordered-Interleaved-Progressive-B.jpg";
                 public const string OrderedInterleavedProgressive723C = "Jpg/issues/Issue723-Ordered-Interleaved-Progressive-C.jpg";
+                public const string ExifGetString750Transform = "Jpg/issues/issue750-exif-tranform.jpg";
+                public const string ExifGetString750Load = "Jpg/issues/issue750-exif-load.jpg";
             }
 
             public static readonly string[] All = Baseline.All.Concat(Progressive.All).ToArray();

tests/Images/External

@@ -1 +1 @@
-Subproject commit ee90e5f32218027744b5d40058b587cc1047b76f
+Subproject commit c6980db777e49d5e526b56cb986001d1a191acdf