Commit 422e0501 introduced a typo (unless removing an 'o' from
balloon is how you deflate it?)

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>