ports/175010: benchmarks/flops: Fix build with clang

[araujo at FreeBSD.org]

Synopsis: benchmarks/flops: Fix build with clang

Responsible-Changed-From-To: freebsd-ports-bugs->araujo
Responsible-Changed-By: araujo
Responsible-Changed-When: Fri Jan 18 06:07:33 UTC 2013
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=175010