avoid leak
avoid leak

(cherry picked from commit 454a6ce3062da9d273978868088bf07b68cd9fa2)
Signed-off-by: osnola <c750a5cf9119d06c2b73a615235a75199dd7e563@loria.fr>

Distrotech/libmwaw,Distrotech/libmwaw,Distrotech/libmwaw