perf tests: Remove wrong semicolon in while loop in CQM test

perf tests: Remove wrong semicolon in while loop in CQM test

The while loop was spinning. Fix by removing a semicolon.

The issue was pointed out by gcc-6's -Wmisleading-indentation.

Signed-off-by: Markus Trippelsdorf <[email protected]>
Reviewed-by: Matt Fleming <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Cc: Ben Hutchings <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Fixes: 035827e9f2bd ("perf tests: Add Intel CQM test")
Link: http://lkml.kernel.org/r/20151214154335.GA1409@x4
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>