implement missing seekdir and telldir

Bug: 18266863
Change-Id: I189ee949d4f7ccee099f3341e349cd969d25480f
diff --git a/tests/stdio_test.cpp b/tests/stdio_test.cpp
index 549792e..6be372c 100644
--- a/tests/stdio_test.cpp
+++ b/tests/stdio_test.cpp
@@ -77,7 +77,7 @@
   int rc = dprintf(tf.fd, "hello\n");
   ASSERT_EQ(rc, 6);
 
-  lseek(tf.fd, SEEK_SET, 0);
+  lseek(tf.fd, 0, SEEK_SET);
   FILE* tfile = fdopen(tf.fd, "r");
   ASSERT_TRUE(tfile != NULL);