Added guard clause of empty exif strings

Dmitry Pentin · Dmitry Pentin · commit 55d01f231f84 · 2022-04-14T15:03:59.000+03:00
diff --git a/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs b/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
@@ -84,6 +84,11 @@ public static unsafe int Write(Encoding encoding, string value, Span<byte> desti
             => encoding.GetBytes(value.AsSpan(), destination);
 #else
         {
+            if (value.Length == 0)
+            {
+                return 0;
+            }
+
             fixed (char* c = value)
             {
                 fixed (byte* b = destination)

Original file line number	Diff line number	Diff line change
`@@ -84,6 +84,11 @@ public static unsafe int Write(Encoding encoding, string value, Span<byte> desti`
`84`	`84`	`=> encoding.GetBytes(value.AsSpan(), destination);`
`85`	`85`	`#else`
`86`	`86`	`{`
	`87`	`+ if (value.Length == 0)`
	`88`	`+ {`
	`89`	`+ return 0;`
	`90`	`+ }`
	`91`	`+`
`87`	`92`	`fixed (char* c = value)`
`88`	`93`	`{`
`89`	`94`	`fixed (byte* b = destination)`