BinaryFactory leaves empty folders if there is a BinaryNotFound exception

[kunalshetye]

It is observed that BinaryFactory creates the directory and if there's a BinaryNotFound exception then it performs a cleanup by deleting the placeholder file but leaving the directory structure as is.

DD4T.Core/source/DD4T.Factories/BinaryFactory.cs

Line 332 in 1fe110c

fileInfo.Directory.Create();

The problem is that if someones tries to malicious access the non-existing image urls (with a non-existing folder) they will end up creating a lot of empty folders which will never cleanup.