MB-18325 Initialize CRITICAL_SECTION before accessing it on Windows
MB-18325 Initialize CRITICAL_SECTION before accessing it on Windows

On windows, CRITICAL_SECTION variable should be initialized by
InitializeCriticalSection() before accessing.

Change-Id: I6c62a8f4682a42fcbdb35e1ab1cf42a1bc11d032

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