BUG-576: fixed invalid key used to search map of modules.

Removed useless null check when searching for grouping.

Change-Id: Ifd8c05560a2ea6377eb3118f03466af1176666c9
Signed-off-by: Martin Vitez <mvitez@cisco.com>
Merge "BUG-576: fixed invalid key used to search map of modules."