Fixing the "empty subcommand" case

Dependencies

• [2] RJMQSZER External commands
• [*] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).

Change contents

• edit in pijul/src/main.rs at line 220
  [2.748]

  [2.748]
  + if cmd.is_empty() {

  + return Ok(false);

  + }