error code consistency for buffers (#1450)

* error code consistency for buffers

* fix a few trailing periods

* apply typo fix from code review

Co-authored-by: Ewan Crawford <ewan.cr@gmail.com>

* apply code review comment

Co-authored-by: Jose Lopez <joselope@qti.qualcomm.com>

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Co-authored-by: Ewan Crawford <ewan.cr@gmail.com>
Co-authored-by: Jose Lopez <joselope@qti.qualcomm.com>

Author: 3 people