Rust

Update datafusion/physical-plan/src/joins/sort_merge_join.rs #776

Job	Run time
Check cargo fmt	43s
cargo check	6m 41s
build with wasm-pack	2m 6s
cargo test (macos)	9m 10s
cargo test (macos-aarch64)	10m 0s
Verify MSRV (Min Supported Rust Version)	6m 52s
Verify Vendored Code	48s
cargo test (win64)	33m 12s
cargo doc	3m 51s
Run sqllogictest with Postgres runner	3m 14s
cargo test pyarrow (amd64)	2m 59s
verify benchmark results (amd64)	10m 38s
check Cargo.toml formatting	2m 47s
clippy	2m 18s
check configs.md is up-to-date	2m 32s
cargo test hash collisions (amd64)	9m 15s
cargo test (amd64)	9m 21s
cargo test doc (amd64)	12m 48s
cargo test datafusion-cli (amd64)	3m 52s
cargo examples (amd64)	12m 9s
	2h 25m 16s

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