dd bs=0 panics (attempt to divide by zero)

[oech3]

$ dd bs=0

thread 'main' panicked at src/uu/dd/src/dd.rs:1405:5:
attempt to divide by zero
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[oech3]

$ dd obs=0

thread 'main' (13271) panicked at src/uu/dd/src/dd.rs:994:26:
chunk size must be non-zero
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace