Bogus command history

[XVilka]

when browsing the history in upwards direction and then changing the direction downwards the last item on which the direction is changed takes two down arrows. it should take only one.

example of actual behavior:
[TIME:KEY:HISTORY_ITEM]
1:U:Z
2:U:Y
3:U:X
4:D:X
5:D:Y

expected behavior:
[TIME:KEY:HISTORY_ITEM]
1:U:Z
2:U:Y
3:U:X
4:D:Y

Next the visual mode doesn't remember the commands in history.
And the history it's self shouldn't contain duplicate commands that immediately follows each other.

P.S. Moved from http://rada.re/y/bugs.php?bugs&s=view&id=78

[radare]

Fixed in git. thanks