RUST-1698 Fix reading gridfs chunks from async-std file stream#950

abr-egn merged 1 commit intomongodb:mainmongodb/mongo-rust-driver:mainfrom

abr-egn:RUST-1698/standardize-perf-testing-fixabr-egn/mongo-rust-driver:RUST-1698/standardize-perf-testing-fixCopy head branch name to clipboard