Filip Roséen authored Sep 01, 2016 and Thomas Guillem committed Sep 01, 2016

If we do not insert the given track into our maps of tracks, we would
previously not invoke es_format_Clean on the given fmt, which of
course would leak dynamically allocated members.

There was also an issue with assigning values to data-members that
would later be overwritten, of course directly causing dynamically
allocated data to be leaked.

Signed-off-by: Thomas Guillem <thomas@gllm.fr>