SITL: fix array-bounds warning in tsys01 simulation #45877

Job	Run time
build (stm32f7, chibios, 10)	3m 38s
build (stm32h7, chibios, 10)	3m 21s
build (fmuv2-plane, chibios, 10)	1m 55s
build (periph-build, chibios, 10)	3m 49s
build (iofirmware, chibios, 10)	1m 52s
build (CubeOrange-bootloader, chibios, 10)	1m 7s
build (fmuv3-bootloader, chibios, 10)	52s
build (revo-bootloader, chibios, 10)	1m 8s
build (stm32h7-debug, chibios, 10)	2m 11s
build (fmuv3, chibios, 10)	5m 55s
build (revo-mini, chibios, 10)	4m 23s
build (MatekF405-Wing, chibios, 10)	4m 42s
build (CubeOrange-ODID, chibios, 10)	2m 30s
build (CubeRedPrimary-bootloader, chibios, 10)	1m 9s
build (configure-all, chibios, 10)	11m 2s
build (build-options-defaults-test, chibios, 10)	6m 54s
build (signing, chibios, 10)	2m 46s
build (CubeOrange-PPP, chibios, 10)	2m 58s
build (CubeRed-EKF2, chibios, 10)	2m 1s
build (SOHW, chibios, 10)	3m 18s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 13s
build (new-check, chibios, 10)	4m 27s
	1h 13m 11s

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