Fix edgecase in Meterpreter job persistence #1346

Job	Run time
python 3.6 macos-11	2m 14s
python 3.11 macos-11	2m 34s
java 8 macos-11	1m 54s
python 3.6 windows-2019	3m 56s
python 3.11 windows-2019	2m 56s
java 8 windows-2019	2m 51s
python 3.6 ubuntu-20.04	1m 4s
python 3.11 ubuntu-20.04	1m 0s
java 8 ubuntu-20.04	1m 7s
windows_meterpreter windows-2019	3m 34s
windows_meterpreter windows-2022	5m 11s
mettle macos-11	1m 41s
mettle ubuntu-20.04	1m 10s
Generate report	32s
	31m 44s

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