Fix cornernode normal #8342

Job	Run time
Build SU2 (BaseMPI)	13m 27s
Build SU2 (ReverseMPI)	11m 7s
Build SU2 (ForwardMPI)	8m 59s
Build SU2 (BaseNoMPI)	6m 2s
Build SU2 (ReverseNoMPI)	9m 23s
Build SU2 (ForwardNoMPI)	7m 33s
Build SU2 (BaseOMP)	6m 31s
Build SU2 (ReverseOMP)	10m 51s
Build SU2 (ForwardOMP)	7m 58s
Build SU2 (asan) (BaseNoMPI-asan)	11m 34s
Build SU2 (asan) (ReverseNoMPI-asan)	29m 18s
Build SU2 (tsan) (BaseOMP-tsan)	11m 50s
Build SU2 (tsan) (ReverseOMP-tsan)	27m 42s
Regression Tests	0s
Unit Tests	0s
Thread Sanitizer Tests (hybrid_regression.py)	27m 18s
Thread Sanitizer Tests (hybrid_regression_AD.py)	11m 46s
Address Sanitizer Tests	0s
	3h 21m 19s

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