HPCC-30455 Fix a bug when trying to validate empty host #9322

Job	Run time
check-skip	10s
Build platform and regress setup	45m 5s
unittests	3m 59s
regression-jobs (hthor, [a-d]*.ecl)	8m 7s
eclwatch-ui-tests	0s
regression-jobs (hthor, [e-h]*.ecl)	6m 26s
regression-jobs (hthor, [i-l]*.ecl)	7m 11s
regression-jobs (hthor, [m-q]*.ecl)	6m 17s
regression-jobs (hthor, [r-u]*.ecl, teststdlibrary.ecl)	16m 46s
regression-jobs (hthor, [v-z]*.ecl)	5m 49s
regression-jobs (thor, [a-d]*.ecl)	8m 38s
regression-jobs (thor, [e-h]*.ecl)	5m 15s
regression-jobs (thor, [i-l]*.ecl)	10m 37s
regression-jobs (thor, [m-q]*.ecl)	6m 2s
regression-jobs (thor, [r-u]*.ecl, teststdlibrary.ecl)	14m 53s
regression-jobs (thor, [v-z]*.ecl)	4m 33s
regression-jobs (roxie, [a-d]*.ecl)	9m 7s
regression-jobs (roxie, [e-h]*.ecl)	5m 13s
regression-jobs (roxie, [i-l]*.ecl)	8m 34s
regression-jobs (roxie, [m-q]*.ecl)	6m 54s
regression-jobs (roxie, [r-u]*.ecl, teststdlibrary.ecl)	19m 8s
regression-jobs (roxie, [v-z]*.ecl)	5m 27s
regression-jobs (hthor, teststdlibrary.ecl)	5m 11s
regression-jobs (thor, teststdlibrary.ecl)	7m 6s
regression-jobs (roxie, teststdlibrary.ecl)	5m 30s
	3h 41m 58s

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