git-debrebase: Do not run a no-op rebase in default mode

No functional change: this is always a no-op, since $breakwater is one
of HEAD's ancestors.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/git-debrebase b/git-debrebase
index 748b49bc2bc34c644bb06d357325789eb808513c..59b15aa38045ef8a79e7bc2b9cfd5ef0093b64b7 100755 (executable)
--- a/git-debrebase
+++ b/git-debrebase
@@ -909,7 +909,7 @@ sub cmd_launder_v0 () {
 sub defaultcmd_rebase () {
     push @ARGV, @{ $opt_defaultcmd_interactive // [] };
     my ($tip,$breakwater) = do_launder_head 'launder for rebase';
-    runcmd @git, qw(rebase), @ARGV, $breakwater;
+    runcmd @git, qw(rebase), @ARGV, $breakwater if @ARGV;
 }
 
 sub cmd_analyse () {