Rust

Update datafusion/physical-plan/src/joins/sort_merge_join.rs #775

Job	Run time
Check cargo fmt	29s
cargo check	6m 51s
cargo test (macos)	20m 20s
build with wasm-pack	2m 14s
cargo test (macos-aarch64)	9m 18s
Verify MSRV (Min Supported Rust Version)	6m 43s
Verify Vendored Code	46s
cargo test (win64)	32m 30s
cargo test pyarrow (amd64)	3m 6s
Run sqllogictest with Postgres runner	3m 16s
check Cargo.toml formatting	2m 45s
clippy	2m 12s
check configs.md is up-to-date	2m 38s
cargo test hash collisions (amd64)	9m 18s
cargo doc	3m 42s
cargo test datafusion-cli (amd64)	3m 52s
cargo test (amd64)	9m 23s
cargo test doc (amd64)	13m 7s
cargo examples (amd64)	11m 57s
verify benchmark results (amd64)	10m 44s
	2h 35m 11s

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