vapor/vapor 4.67.5

Prevent vapor streaming requests from randomly losing a first chunk, stalling the request

on GitHub

This patch was authored by @Joannis and released by @0xTim.

Fixes a bug where a streaming body from a request was not processing a chunk, causing the request to stall. This happened when a handler was being set at the exact moment a chunk was being processed, causing the chunk to be added to a now irrelevant array that was just processed while switching to a streaming callback.

See #2906