close[t:3832] ydb's stat64 now checks for a null txn before passing a tokutxn to the brt layer. modified original stat64.c test as a new stat64-null-txn.c test without transactions, passes.


git-svn-id: file:///svn/toku/tokudb@33918 c7de825b-a66e-492c-adef-691d508d4ae1