[PATCH 0/1] MR2321: windowscodecs: Don't reorder gif extension blocks in GetReaderByIndex.

[Piotr Caban (＠piotr)]

The code that reorders extension blocks is broken and causes some extensions to be not reported (when GCE is not the last extension block).

This fixes GCE blocks reading from gifs attached in [bug 54563](https://bugs.winehq.org/show_bug.cgi?id=54563).