RFR (JDK10/JAXP) 8181151: Fix lint warnings in JAXP repo: cast

[Lance Andersen]

Looks OK Joe
> On Nov 7, 2017, at 2:12 PM, Joe Wang <huizhe.wang at oracle.com> wrote:
> 
> Hi,
> 
> This change fixes about 300 [cast] warnings in the JAXP sources. Changes are basically removing the redundant cast, a bit more than that only in one case: in XSDUniqueOrKeyTraverser at line 92, uniqueOrKey was assigned to itself when it meant to be "idc". The change didn't affect the operation since idc is a result of the get operation with uniqueOrKey's name.
> 
> JAXP tests passed.
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8181151
> webrevs: http://cr.openjdk.java.net/~joehw/jdk10/8181151/webrev/
> 
> Thanks,
> Joe

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
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