Update rnng submodule

kmkurn · kmkurn · commit 20544a413116 · 2017-06-24T20:48:21.000+01:00
diff --git a/misc/rnng b/misc/rnng
@@ -1 +1 @@
-Subproject commit 8fc0048915eca744a3d970af2c671cccc5ef8568
+Subproject commit 3b6cd6ccc9b677ae0d440966a49a619227b4fb97
