fix reaping as per OmniTechnoMancer's advice

src/main.rs

@@ -32,7 +32,8 @@ fn sig_reap() {
 					if pid.as_raw() <= 0 {
 						break;
 					},
-				_ => (),
+				WaitStatus::StillAlive => break,
+				_ => unreachable!(),
 			},
 		}
 	}