Send unpaced media as padding. #1372

Job	Run time
lint	37s
cargo-deny (aarch64-apple-ios)	32s
test (ubuntu-latest, stable)	3m 9s
cargo-deny (aarch64-linux-android)	28s
test (ubuntu-latest, beta)	1m 33s
cargo-deny (i686-pc-windows-gnu)	24s
test (ubuntu-latest, 1.65.0)	1m 52s
cargo-deny (i686-pc-windows-msvc)	28s
test (macos-latest, stable)	1m 29s
cargo-deny (i686-unknown-linux-gnu)	33s
test (macos-latest, beta)	1m 38s
cargo-deny (wasm32-unknown-unknown)	28s
cargo-deny (x86_64-apple-darwin)	30s
test (macos-latest, 1.65.0)	2m 13s
cargo-deny (x86_64-apple-ios)	19s
test (windows-latest, stable)	4m 14s
cargo-deny (x86_64-pc-windows-gnu)	31s
test (windows-latest, beta)	2m 44s
cargo-deny (x86_64-pc-windows-msvc)	33s
test (windows-latest, 1.65.0)	3m 39s
cargo-deny (x86_64-unknown-linux-gnu)	28s
cargo-deny (x86_64-unknown-redox)	25s
	28m 47s

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