Add the author of the last fix (Issue #6662)
diff --git a/Misc/ACKS b/Misc/ACKS
index 0aa7966..a47e2c5 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -860,3 +860,4 @@
 Uwe Zessin
 Tarek Ziadé
 Peter Åstrand
+Fredrik Håård