omx_core: fix heap corruption when unregistering component

Change-Id: Ie5c20e48f376054b1fe468274128e4c19c2ef3d1
samsung: Correct macloader values

Detect is done on lower-case, so these records didn't work previously at all

Change-Id: I9a58e89679ed8aeeb194fde60cb90576aac79388