fuse: clear FR_PENDING if abort is detected when sending request

The (!fiq->connected) check was moved into the queuing method resulting in
the following:

Fixes: 5de8acb4 ("fuse: cleanup request queuing towards virtiofs")
Reported-by: Lai, Yi <yi1.lai@linux.intel.com>
Closes: https://lore.kernel.org/all/ZvFEAM6JfrBKsOU0@ly-workstation/Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/dev.c

@@ -295,6 +295,7 @@ static void fuse_dev_queue_req(struct fuse_iqueue *fiq, struct fuse_req *req)
 	} else {
 		spin_unlock(&fiq->lock);
 		req->out.h.error = -ENOTCONN;
+		clear_bit(FR_PENDING, &req->flags);
 		fuse_request_end(req);
 	}
 }