trace_buffer: fix debug log statement (wrong var name) am: ae9673f68e am: 991acb52b2 am: 1ec20cf875
trace_buffer: fix debug log statement (wrong var name) am: ae9673f68e am: 991acb52b2
am: 1ec20cf875

Change-Id: I1728abe0b825a67f5f88412217760efb1a96c998

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto