fix a valgrind bug refs[t:2199]

git-svn-id: file:///svn/toku/tokudb@15995 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/tests/recovery-no-datadir.c

@@ -20,7 +20,7 @@ run_test(void) {
     r = toku_logger_close(&logger); assert(r == 0);
 
     // run recovery
-    r = tokudb_recover(NULL, TESTDIR, 0, 0, 0); 
+    r = tokudb_recover("/junk", TESTDIR, 0, 0, 0); 
     assert(r != 0);
     return 0;
 }