Changed onward destination

I am a British national currently in Shanghai under the 144 hours visa-free transit scheme. I arrived into Shanghai from Kuala Lumpur and at the time stated that my next destination on departure from Shanghai would be Hong Kong.

I am still leaving on the same day which is well, well within the 144 hour limit but with an enforced change of plans I am now flying to London rather than Hong Kong.
Does this matter please? Any advice most helpful.