libcamera: device_enumerator_udev: Log the right number of missing deps

Since commit e75ef59e02 ("libcamera: device_enumerator_udev: Update
pending list in addUdevDevice") the populateMediaDevice() function
returns 0 on success instead of the number of missing dependencies,
resulting in a wrong number being logged. Fix it.

Fixes: e75ef59e02 ("libcamera: device_enumerator_udev: Update pending list in addUdevDevice")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <email@uajain.com>

src/libcamera/device_enumerator_udev.cpp

@@ -94,7 +94,8 @@ int DeviceEnumeratorUdev::addUdevDevice(struct udev_device *dev)
 		if (!deps.empty()) {
 			LOG(DeviceEnumerator, Debug)
 				<< "Defer media device " << media->deviceNode()
-				<< " due to " << ret << " missing dependencies";
+				<< " due to " << deps.size()
+				<< " missing dependencies";
 
 			pending_.emplace_back(std::move(media), std::move(deps));
 			MediaDeviceDeps *mediaDeps = &pending_.back();