Leak when iterating through commits and diff them

When I run the code below on a production repository, i can see that the memory is all the time increasing and after about 3000 commits my pc crashes with out of memory.

For about 1000 commit it reserved about 500 MB Ram.

Code for Testsetup see here:
https://gist.github.com/Gentlehag/9f595ab13f459e22859fa5d9557e550b

PS: I also posted here:
http://stackoverflow.com/questions/39258639/possible-leak-when-reading-content

My target is to just iterate through all commits and getting all files that were changed in eahc commit.

Is there a better way ? Is this a bug?

Comece executando a reprodução vinculada no GitHub Gist da issue e observe a memória enquanto itera pelos commits e diffs. Compare o comportamento com a discussão no Stack Overflow e, em seguida, identifique se o vazamento está na iteração de commits ou no tratamento de diffs; considera-se concluído quando o crescimento tiver sido reproduzido e uma correção verificada ou alternativa documentada tiver sido estabelecida.