Darian Leung 40b96cf596 freertos: Refactor stream buffer spinlock initialization
This commit refactors the way stream buffers initialize their spinlock.

- "prvInitialiseNewStreamBuffer()" now initializes the stream buffer fields
  manually (instead of using memset()) to avoid resetting the spin lock
- Stream buffer creation functions now manually initialize the spinlock after
  the other fields are initialized using "prvInitialiseNewStreamBuffer()"

Also added comments to event group spinlock initializtion.
2022-11-02 14:56:46 +08:00
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