Fix major memory-leak in ristretto-0.0.93

[Stephan Arts]

Hi all,

I am having a few issues with the git pre-commit-hooks, so I can't
push this fix to the repository.

That's why I have created this bugreport:
https://bugzilla.xfce.org/show_bug.cgi?id=7882

The attached patch fixes 2 major memory-leaks in ristretto-0.0.93 :-)

You might want to apply that one. (oh, the patch was created with
git-format-patch, so it has some mail-headers on top...)

Kind regards,
Stephan


-- 
"The number of Unix installations has grown to 10, with more expected."
-- The Unix Programmer's Manual, 2nd Edition, June, 1972