Forgot the mutex header.

godbyk · godbyk · commit 5fa83f05cfc0 · 2016-03-24T16:05:11.000-05:00
diff --git a/examples/plugin/org_osvr_example_TriggerHardwareDetect.cpp b/examples/plugin/org_osvr_example_TriggerHardwareDetect.cpp
@@ -28,6 +28,7 @@
 #include <iostream>
 #include <chrono>
 #include <thread>
+#include <mutex>
 
 
 // Anonymous namespace to avoid symbol collision
