migration: qemu_savevm_state_cleanup() in cleanup

Moving existing callers all into migrate_fd_cleanup().  It simplifies
migration_thread() a bit.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
1 file changed