Update RobotUnit.cpp

source/RobotAPI/libraries/Controllers/RobotUnit.cpp

@@ -319,6 +319,7 @@ bool armarx::RobotUnit::hasLVL0Controller(const std::string& jointName, const st
 
 bool armarx::RobotUnit::loadLibFromAbsolutePath(const std::string& path)
 {
+    GuardType guard {dataMutex};
     if (loadedLibs.count(path) > 0)
     {
         return true;