Possible memleak in TAppConfigJson.Save

[estrify]

Please, see attached test case pressing buttons in order. Thanks in advance.

_20210105_MemLeak_TAppConfigJson_Save.zip

[estrify]

I think I have found the bug (see attached image). I am not sure if it could have side effects, so please consider to include it in a proper way to this fantastic library.

[exilon]

You're right. It was a bug with the integration of GenericList serialization.Thanks for your analysis. Now is solved and pushed to master branch.