Addresses #2336 refs[t:2336] Undoes unnecessary bug fix, restore assert.

git-svn-id: file:///svn/toku/tokudb@17323 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/recover.c

@@ -800,8 +800,13 @@ static int toku_recover_backward_fassociate (struct logtype_fassociate *l, RECOV
 static int toku_recover_xstillopen (struct logtype_xstillopen *UU(l), RECOVER_ENV UU(renv)) {
     switch (renv->ss.ss) {
     case FORWARD_OLDER_CHECKPOINT_BEGIN:
+        return 0;
     case FORWARD_BETWEEN_CHECKPOINT_BEGIN_END:
     case FORWARD_NEWER_CHECKPOINT_END: {
+        // assert that the transaction exists
+        TOKUTXN txn = NULL;
+        int r = toku_txnid2txn(renv->logger, l->txnid, &txn);
+        assert(r == 0 && txn != NULL);
         return 0;
     }
     default: