Bug detected for imsm metadata.
Assembling of array using Incremental switch generate segmentation
fault if BBM log is detected.
Reason: missing return from Incremental_container if BBM is detected
and unnecessary list=NULL assignment.
This patch fix the problem and memory leak in this area.
Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@intel.com> Signed-off-by: NeilBrown <neilb@suse.de>