If there is no such thing then code::blocks team should add this in their next release.(it's just advice)
If you know a good and free memory leak detector, someone can surely create a plugin to call it (if it has a btach mode available, otherwise, you can create an entry in the "Tools [ + ] "-menu.
So feel free to post a link to a website where someone can download such a tool, or even better create a plugin for it.
I don't know such a memoryleak detector (but I did not really do a deep search for it, I feel mor familiar with linux).