When any result that is being merged is bad, mark them all bad to give
consistent output in interval mode.

No before/after, because the issue was only found in theoretical review
and it is hard to reproduce
Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-4-andi@firstfloor.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>