Patch by Denis Stanishevskiy, prevent endless loop in the ID3 parser

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12968 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 798fce3..4086f1b 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -285,3 +285,4 @@
 Douglas Valentine
 Jacob Gardner
 Pascal Briehl
+Denis Stanishevskiy