init filemgr_config in filemgr_destroy_file, fix crash
init filemgr_config in filemgr_destroy_file, fix crash

Change-Id: Ied4d62e54c474906cb3b9c6ac39bf21f7e196e20

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