AD: fix logic for linearization validation #796

Job	Run time
build-postlib-release	11m 38s
build-drivers-release	4m 51s
build-all-debug	8m 5s
build-all-debug-single	3m 16s
build-test-uadriver-debug	2m 4s
rtest-module-drivers	3m 0s
rtest-modules-debug	6m 30s
build-fastfarm-release	11m 42s
build-openfast-release	4m 40s
build-interfaces-release	4m 38s
rtest-interfaces	3m 9s
rtest-OF-5MW_Land_AeroMap	1m 49s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	1m 29s
rtest-OF-5MW_Land_BD_DLL_WTurb	2m 21s
rtest-OF	7m 12s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	1m 52s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	5m 4s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	1m 13s
rtest-OF-linearization	3m 43s
rtest-OF-simulink	11m 19s
rtest-FF	2m 6s
	1h 41m 41s

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