fixed dupe glitch, described here:
http://epochmod.com/forum/index.php?/topic/28493-alpha-release-single-currency-30-storage-default-hive-no-global-banking/page-15#entry182128
also prevent dupe glitching by a second player.
the first commit basically just fixed it the player which is actually packing the vault, but not for others which might be around.
this is actaully a better place for the action removal, cause the locking might still be cancelled before
Merge pull request #5 from BangL/master

fixed dupe glitch