The memory used for a long time is not released

[2456719939]

[2456719939]

I found that using this toast will cause the memory to be occupied for a long time without releasing.
How and when should I release the memory it occupies?

[DJ-Raven]

Hello @2456719939 You run the raven.demo.Test ?

[DJ-Raven]

I get it #4
And I will check this issue as soon as I can