Note what's going on with the redirect of stderr. Refs #2308. [t:2308]

git-svn-id: file:///svn/toku/tokudb@17144 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/tests/recovery-cbegin.c

@@ -22,6 +22,8 @@ run_test(void) {
     r = toku_logger_close(&logger); assert(r == 0);
 
     // run recovery
+
+    // redirect stderr
     int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
     r = toku_dup2(devnul, fileno(stderr));