Review Request: Fixed master ID generation so that we don't print negative numbers.

[Benjamin Hindman]

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/5240/
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Review request for mesos, John Sirois and Vinod Kone.


Summary
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An IP address sometimes printed as a negative number.


Diffs
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  src/master/master.cpp 0217370 

Diff: https://reviews.apache.org/r/5240/diff


Testing
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make check


Thanks,

Benjamin