[SimCI] Make a variable (#1503)

Author: benedikt-voelkel

test/run_workflow_tests.sh

@@ -74,7 +74,7 @@ test_single_wf()
     if [[ "${ret_this}" != "0" ]] ; then
         echo "[FATAL]: O2DPG_TEST Workflow creation failed" >> ${LOG_FILE_WF}
     elif [[ "${execute}" != "" ]] ; then
-        local memlimit=${O2DPG_TEST_WORKFLOW_MEMLIMIT:+--mem-limit O2DPG_TEST_WORKFLOW_MEMLIMIT}
+        local memlimit=${O2DPG_TEST_WORKFLOW_MEMLIMIT:+--mem-limit ${O2DPG_TEST_WORKFLOW_MEMLIMIT}}
         ${O2DPG_ROOT}/MC/bin/o2_dpg_workflow_runner.py -f workflow.json --cpu-limit 8 -tt aod ${memlimit} >> ${LOG_FILE_WF} 2>&1
         ret_this=${?}
         [[ "${ret_this}" == "0" ]] && { ${O2DPG_ROOT}/MC/bin/o2_dpg_workflow_runner.py -f workflow.json --cpu-limit 8 --target-labels QC ${memlimit} >> ${LOG_FILE_WF} 2>&1 ; ret_this_qc=${?} ; }