bonding: fix a typo in a comment

Signed-off-by: Nicolas de Pesloüan <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/bonding/bond_main.c

···
 }
 
 /*
-* First release a slave and than destroy the bond if no more slaves are left.
+* First release a slave and then destroy the bond if no more slaves are left.
 * Must be under rtnl_lock when this function is called.
 */
 static int  bond_release_and_destroy(struct net_device *bond_dev,