When passing a bad --trunk option to `git svn clone`, like for example the
same URL that we are cloning:

  C:\Windows\system32>git svn clone
  https://mycompany.svn.beanstalkapp.com/myproject --no-metadata -A
  c:\temp\svn_to_git_users.txt
  --trunk=https://mycompany.svn.beanstalkapp.com/myproject
  --tags=https://mycompany.svn.beanstalkapp.com/myproject/tags
  --branches=https://mycompany.svn.beanstalkapp.com/myproject/branches
  c:\code\Git_myproject

One gets an "Use of uninitialized value $u in substitution (s///)" error:

  [...]
  W: +empty_dir: branches/20080918_DBDEPLOY/vendor/src/csharp/MS WCSF
  Contrib/src/Services
  W: +empty_dir: 
branches/20080918_DBDEPLOY/vendor/src/csharp/RealWorldControls/References
  r530 = c276e3b039d8e38759c6fb17443349732552d7a2 (refs/remotes/origin/trunk)
  Found possible branch point:
  https://mycompany.svn.beanstalkapp.com/myproject/trunk =>
  https://mycompany.svn.beanstalkapp.com/myproject/branches/20080918_DBDEPLOY,
  529
  Use of uninitialized value $u in substitution (s///) at
  /mingw32/share/perl5/site_perl/Git/SVN.pm line 101.
  Use of uninitialized value $u in concatenation (.) or string at
  /mingw32/share/perl5/site_perl/Git/SVN.pm line 101.
  refs/remotes/origin/trunk:
  'https://mycompany.svn.beanstalkapp.com/myproject' not found in ''
  C:\Windows\system32>

Let's fix that by just die()ing when we have an uninitialized value because we
cannot get commit metadata from a ref.

Signed-off-by: Christian Couder <chrisc...@tuxfamily.org>
---
 perl/Git/SVN.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/perl/Git/SVN.pm b/perl/Git/SVN.pm
index b2c14e2..d94d01c 100644
--- a/perl/Git/SVN.pm
+++ b/perl/Git/SVN.pm
@@ -97,7 +97,8 @@ sub resolve_local_globs {
                                    "existing: $existing\n",
                                    " globbed: $refname\n";
                        }
-                       my $u = (::cmt_metadata("$refname"))[0];
+                       my $u = (::cmt_metadata("$refname"))[0] or die
+                           "$refname: no associated commit metadata\n";
                        $u =~ s!^\Q$url\E(/|$)!! or die
                          "$refname: '$url' not found in '$u'\n";
                        if ($pathname ne $u) {
-- 
2.8.0.rc2

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