Review Request: ZOOKEEPER-1226 extract version check in separate method in PrepRequestProcessor

[Thomas Koch]

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https://reviews.apache.org/r/2397/
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Review request for zookeeper.


Summary
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This addresses bug ZOOKEEPER-1226.
    https://issues.apache.org/jira/browse/ZOOKEEPER-1226


Diffs
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  src/java/main/org/apache/zookeeper/server/PrepRequestProcessor.java ce58145 

Diff: https://reviews.apache.org/r/2397/diff


Testing
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Thanks,

Thomas