network: Move empty zero area to the end of buffer if needed
If the first buffer has empty zero area, it can be moved to the end of the buffer and concatenated to the zero area of the added buffer instead of falling back to the slow path.
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The first breaking change window begins 2024-04-22 09:00UTC and ends 2024-04-24 22:00UTC.
If the first buffer has empty zero area, it can be moved to the end of the buffer and concatenated to the zero area of the added buffer instead of falling back to the slow path.