Memory leak when using gdb-pixbuf

[shamazmazum]

Hi!

When I call a function like set-image many times, I get gigabytes of memory leaked. gtk-image-set-from-file is OK, but I need a pixbuf for resizing. What's wrong here?

(defun set-image (image filename)
  (gtk:gtk-image-set-from-pixbuf
   image
   (gdk-pixbuf:gdk-pixbuf-new-from-file filename)))

Part of a real application where memory leak occurs:
https://github.com/shamazmazum/similar-images/blob/e11efb8e046ae3bcff85a11bd507be6a7dc5d438/viewer/viewer.lisp