Improved temporary variable names in generated JS #10

Job	Run time
build_benchmarks	39s
Verify that web-sys is compiled correctly	40s
build_nightly	38s
build_examples	39s
Check	40s
Clippy	40s
Clippy (web-sys)	38s
Clippy (project)	39s
dist_linux_aarch64_gnu	27s
dist_linux_x86_64_musl	38s
dist_macos_aarch64	42s
dist_macos_x86_64	41s
dist_windows	32s
doc_api	37s
doc_book	5s
Check MSRV for CLI tools	32s
Check MSRV for libraries	36s
Rustfmt	10s
Taplo	12s
Build and test the deno example	38s
Run native tests	17s
Run wasm-bindgen crate tests with multithreading	13s
Run UI compile-fail tests	1s
Run wasm-bindgen crate tests (wasm-bindgen)	1s
Run wasm-bindgen crate tests with externref feature	1s
Run wasm-bindgen wasm test	1s
Run wasm-bindgen crate tests (wasm-bindgen (serde-serialize))	1s
Run wasm-bindgen crate tests with multi-value feature	1s
Run web-sys tests (with geckodriver)	1s
Run wasm-bindgen crate tests (wasm-bindgen (enable-interning))	1s
Run web-sys (all features) tests (with geckodriver)	1s
Run web-sys (unstable, all features) tests (with geckodriver)	1s
Run js-sys tests (with geckodriver)	1s
Run js-sys (unstable) tests (with geckodriver)	1s
Run wasm-bindgen-webidl tests (with geckodriver)	1s
Run webidl-tests tests (with geckodriver)	1s
Run webidl-tests (unstable) tests (with geckodriver)	1s
Run typescript-tests tests (with geckodriver)	1s
test_examples	1s
test_nightly	1s
deploy	1s
	11m 52s

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