Fix panic handler

It wasn't actually exiting and would basically block indefinitely after reading
from stdin.

src/panic.rs

@@ -20,12 +20,14 @@ pub fn panic_handler(main: impl FnOnce() -> i32 + UnwindSafe) -> ! {
             );
             let mut buf = [0_u8; 1];
             loop {
+                // Move the cursor down so it isn't blocking the text
+                eprintf!("\n");
                 let Ok(n) = read_blocked(STDIN_FILENO, &mut buf) else {
                     break;
                 };
                 if n == 0 || matches!(buf[0], b'q' | b'\n' | b'\r') {
                     eprintf!("\n");
-                    break;
+                    std::process::abort();
                 }
             }
         }));