[BUG] Embed the h5 page in the Android client, click the client's physical return to close the page and then open the im page. After repeating this several times, it is found that the client memory is full and the page crashes.

[BUG] Embed the h5 page in the Android client, click the client's physical return to close the page and then open the im page. After repeating this several times, it is found that the client memory is full and the page crashes. #22