tiny bugfix to updated monitoring macro

[gluex]

Test status for this pull request: SUCCESS

Summary: /work/halld/pull_request_test/sim-recon^aaust_timing_monitoring_fix/tests/summary.txt Logs: /work/halld/pull_request_test/sim-recon^aaust_timing_monitoring_fix/tests/log

Build log: /work/halld/pull_request_test/sim-recon^aaust_timing_monitoring_fix/make_aaust_timing_monitoring_fix.log Build report: /work/halld/pull_request_test/sim-recon^aaust_timing_monitoring_fix/report_aaust_timing_monitoring_fix.txt Location of build: /work/halld/pull_request_test/sim-recon^aaust_timing_monitoring_fix