ssh-keygen: Parse switches with _parse_usage, not _parse_help

Author: scop

completions/ssh-keygen

@@ -40,7 +40,7 @@ _ssh_keygen()
     esac
 
     if [[ $cur == -* ]]; then
-        COMPREPLY=( $( compgen -W '$( _parse_help "$1" "-\?" )' -- "$cur" ) )
+        COMPREPLY=( $( compgen -W '$( _parse_usage "$1" "-?" )' -- "$cur" ) )
     fi
 } &&
 complete -F _ssh_keygen ssh-keygen