bug: cannot directly move active stake to another pool

[gabririgo]

The staking system should allow a staker to change staking pool for a given amount. Currently, this line reverts on one such transaction, as the pointers of both inputs are the same when trying to move stake from delegated status from one staking pool to another. The current flow requires a staker to move stake to undelegated, wait for the epoch to end, and stake again, thus missing 1 epoch worth of rewards.

The possible solution is to return instead of revert. The code should be changed from:
require(!_arePointersEqual(fromPtr, toPtr), "STAKING_POINTERS_EQUAL_ERROR");
to the following:
if (_arePointersEqual(fromPtr, toPtr)) return;

Notice: moving stake is possible using the batchExecute(...args) method and encoding 2 moveStake(from, to) calls, with a minor gas overhead.

[gabririgo]

notice: in order to move active stake from one pool to another within the same epoch, just need to
moveStake([1,oldPool], [0, oldPool], amount)
and then
moveStake([0, newPool], [1, newPool], amount)

or in 1 single transaction
batchExecute(moveStake([1, oldPool], [0, oldPool], amount), moveStake([0, newPool], [1, newPool], amount))
This will cost 45% more than executing `moveStake([1, oldPool], [1, newPool], amount) but at least will execute the task as it is expected to be.

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This issue has been automatically closed because no activity occured in 30 days after being marked as stale. If it's still relevant - feel free to reopen. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.