The call to pl_dict_put will free the pattern if an error occurs so the pcl_pattern_free_pattern
is not required. Freeing the pattern data is now handled here to prevent leaks and also to
prevent double freeing.

Two typos were also cleared up.

Error created using :-
MEMENTO_FAILAT=15000 ./membin/gpcl6 -sDEVICE=pbmraw -o /dev/null ./tests_private/pcl/pcl5cfts/fts.1816