fuse: cleanup request_end()
fuse: cleanup request_end()

Now that we atomically test having already done everything we no longer
need other protection.

Signed-off-by: Miklos Szeredi <84cd5483a2f9acd1c37251cba7c2908448f221b8@suse.cz>
Reviewed-by: Ashish Samant <8b81d500fde961aeb6e5c1b881cda93a1c7f3f60@oracle.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs