Fix rdns build.

diff --git a/src/rdns b/src/rdns
index 221f5b4d44b9ad288c218dc0a241220742b3a7dc..58b5165e78249cce9e8f0cae1f565417c187ea49 160000 (submodule)
--- a/src/rdns
+++ b/src/rdns
@@ -1 +1 @@
-Subproject commit 221f5b4d44b9ad288c218dc0a241220742b3a7dc
+Subproject commit 58b5165e78249cce9e8f0cae1f565417c187ea49