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dim
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2017-05-16T18:54:25.081504Z
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MFC r318259:

Silence a -Wunused warning about the junk variable being used to raise
an inexact floating point exception.  The variable cannot be eliminated,
unfortunately, otherwise the desired addition triggering the exception
will be emitted neither by clang, nor by gcc.

Reviewed by:	Steve Kargl, bde

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