Signed-off-by: Tristan Matthews <le.businessman@gmail.com>

Fixed-by: Francois Cartegnie <fcvlcdev@free.fr>
Signed-off-by: Francois Cartegnie <fcvlcdev@free.fr>

This new callback is triggered when an element is added/removed from
the list, or when the list is cleared.

Anything older will crash a lot.

Close #11856

It has been resolved differently as of jpeglib v9a.
Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

Only 200 bytes are peeked but FromCharset was being called with 512.
The char * returned by FromCharset was not being freed, and
strstr was being called on a buffer that was not NULL terminated
(in the non utf-8 case).

current_element is checked earlier and the loop continues if it's NULL.