Address some clippy lints
[m17rt] / tools /
drwxr-xr-x   ..
drwxr-xr-x - m17rt-demod
drwxr-xr-x - m17rt-mod
drwxr-xr-x - m17rt-rxpacket
drwxr-xr-x - m17rt-soundcards
drwxr-xr-x - m17rt-txpacket