git: speed up Git->new by 5% or so

This becomes noticeable when loading lots of coderepos on
my local mirror of git.kernel.org now that we can load repos
from cindex.

diff --git a/lib/PublicInbox/Git.pm b/lib/PublicInbox/Git.pm
index a374649f1809aaa40c9035fdb74cc382c765127e..235a35cd97881efbb3a73f7b2cacfb665b28b620 100644 (file)
--- a/lib/PublicInbox/Git.pm
+++ b/lib/PublicInbox/Git.pm
@@ -91,8 +91,9 @@ sub git_quote ($) {
 
 sub new {
        my ($class, $git_dir) = @_;
+       $git_dir .= '/';
        $git_dir =~ tr!/!/!s;
-       $git_dir =~ s!/*\z!!s;
+       chop $git_dir;
        # may contain {-tmp} field for File::Temp::Dir
        bless { git_dir => $git_dir }, $class
 }