perf list: Fix JSON segfault by setting the used skip_duplicate_pmus callback
JIRA: https://issues.redhat.com/browse/RHEL-17626
Signed-off-by: Michael Petlan mpetlan@redhat.com
JIRA: https://issues.redhat.com/browse/RHEL-17626
Signed-off-by: Michael Petlan mpetlan@redhat.com