Fix: potential thread leak #1091

Job	Run time
Run Linters	2m 29s
Collect data for other tasks	12s
Windows Build	1m 47s
Compile Maps	2m 26s
Integration Tests (birdshot) / run_integration_tests	8m 44s
Integration Tests (deltastation) / run_integration_tests	8m 51s
Integration Tests (gateway_test) / run_integration_tests	9m 51s
Integration Tests (icebox) / run_integration_tests	9m 14s
Integration Tests (metastation) / run_integration_tests	9m 38s
Integration Tests (multiz_debug) / run_integration_tests	7m 56s
Integration Tests (northstar) / run_integration_tests	9m 44s
Integration Tests (runtimestation) / run_integration_tests	7m 26s
Integration Tests (tramstation) / run_integration_tests	8m 54s
Integration Tests (wawastation) / run_integration_tests	8m 48s
Alternate Tests (515, 1627, runtimestation) / run_integration_tests	8m 9s
Check Alternate Tests	1s
Compare Screenshot Tests	0s
	1h 44m 10s

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