Qutex: currOwner should use registered sh_ptr to Lockvoker

This ensures that the Lockvoker object we access from currOwner
remains valid past the lifetime of the Lockvoker object that
gets copied and invoked by boost::asio

smocore/qutex.cpp

@@ -44,7 +44,9 @@ bool Qutex::tryAcquire(
 	{
 		isOwned = true;
 #ifdef CONFIG_ENABLE_DEBUG_LOCKS
-		currOwner = const_cast<LockerAndInvokerBase*>(&tryingLockvoker);
+		// Use the stored iterator from the LockSet
+		auto it = tryingLockvoker.getLockvokerIteratorForQutex(*this);
+		currOwner = *it;
 #endif
 		lock.release();
 		return true;
@@ -59,7 +61,7 @@ bool Qutex::tryAcquire(
 		{
 			isOwned = true;
 #ifdef CONFIG_ENABLE_DEBUG_LOCKS
-			currOwner = const_cast<LockerAndInvokerBase*>(&tryingLockvoker);
+			currOwner = queue.front();
 #endif
 			ret = true;
 		}
@@ -96,7 +98,9 @@ bool Qutex::tryAcquire(
 	// Not found in rear portion - must be in top X%, so succeed
 	isOwned = true;
 #ifdef CONFIG_ENABLE_DEBUG_LOCKS
-	currOwner = const_cast<LockerAndInvokerBase*>(&tryingLockvoker);
+	// Use the stored iterator from the LockSet
+	auto it = tryingLockvoker.getLockvokerIteratorForQutex(*this);
+	currOwner = *it;
 #endif
 	lock.release();
 	return true;