bugfix MultiLevelHC #17

Job	Run time
Build (Release)	3m 25s
Build (Debug)	3m 52s
Build (RelWithDebInfo-noEigen)	6m 14s
Build (RelWithDebInfo)	6m 16s
Build & Test (RelWithDebInfo + Eigen)	6m 44s
Build & Test (RelWithDebInfo, no Eigen)	4m 59s
Build Docs	0s
	31m 30s

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