MB-17355 Fix buffer overflow of stack area in rollback_forward_seqnum()
MB-17355 Fix buffer overflow of stack area in rollback_forward_seqnum()

- As the test uses doc[0] ~ doc[n], we have to allocate n+1 memory
regions.

Change-Id: I272270d79ed16972b8213c958773834003eb673a

couchbase/forestdb,couchbase/forestdb,hisundar/forestdb,hisundar/forestdb,wurikiji/forestdb,wurikiji/forestdb