yield_until_fd_readable: make it work with any AioContect

Simply use qemu_get_current_aio_context().

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Message-Id: <20191024045610.9071-1-dietmar@proxmox.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
1 file changed