Rare possibility for 0 byte files to be left around

[Xavron]

Both java.io.File & scoped storage are affected here.

When storing a file, the file is created:

https://github.com/ppareit/swiftp/blob/df0db0eeece48267c27e98da6117fd9d61e05b4f/app/src/main/java/be/ppareit/swiftp/server/CmdAbstractStore.java#L88C1-L103C18

Any issue at all following it such as during openDataSocket() for example:

https://github.com/ppareit/swiftp/blob/df0db0eeece48267c27e98da6117fd9d61e05b4f/app/src/main/java/be/ppareit/swiftp/server/CmdAbstractStore.java#L146C1-L146C51

Will leave 0 byte files around as there is no cleanup. A client may fail to fix it. Any automated client will now have corrupted files and need to do full hash or size check of all files to fix it.

Could fall on client side depending on viewpoint. If errors out, verify all files. So, can be closed if that is the end viewpoint. Didn't look at ftp specs on it.