Update submodule
diff --git a/WiringPi b/WiringPi
index 4b08e7f..23f3f5a 160000
--- a/WiringPi
+++ b/WiringPi
@@ -1 +1 @@
-Subproject commit 4b08e7ff715552cd25591b6a9385c641ecb4e86c
+Subproject commit 23f3f5a4e2d9b1a79d8c20e2466f8f74b83595fc