fix getting address of cluster 0 #31
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Due to the changes in 530b663 to suuport larger disk the math to covert a to an address underflows then it cast to a wider int without sign extention leaving a bit set in the middle of the number. This change moves the subtraction to happen after the other additions and widening thus prevting any underflow issues.
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Due to the changes in 530b663 to suuport larger disk the math to covert a
to an address underflows then it cast to a wider int without sign extention
leaving a bit set in the middle of the number.
This change moves the subtraction to happen after the other additions
and widening thus prevting any underflow issues.
fixes #30