main: Exit with `EX_NOINPUT` when no password copy options are present

I wrote this program before I started using sysexits. Now, a different
exit code makes more sense.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/main.rs b/src/main.rs
index 711b9f9..289a09f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -141,8 +141,7 @@ fn main() {
     let copy_options = parse_options(input);
 
     if copy_options.is_empty() {
-        // TODO: 66 noinput
-        process::exit(1);
+        process::exit(exitcode::NOINPUT);
     }
 
     let mut term = Terminal::new().unwrap();