Phrase's logic of checkfs

[Giova84]

Well, I always seen this on Haiku, but since is a very minor issue (in facts i set this ticket as enhancement) I report this only now.

Ok: when I run a checkfs -c /boot (so to perform only a check of the filesystem), if there are some blocks that could be freed, in facts, checkfs will says, for example: "5986 blocks could be freed".

So when I run checkfs without the -c flag (checkfs /boot), to really fix the issues, it will say again "5986 blocks could be freed": but these block, after such command, has been freed: is not a conditional; in facts if I run again checkfs /boot, it will says "0 blocks could be freed".

So, checkfs /boot should affirm that blocks has been freed, if there are block to freed.