fix bug in RegBoard.validMove(moveIn, move) when checking move.from move.to
fix bug in RegBoard.validMove(moveIn, move) when checking move.from move.to

The first check in validMove checks if (from == to), but the check
was against the uninitialized move parameter instead of moveIn.

jdm64/GenesisChess-Android,jdm64/GenesisChess-Android