[PATCH] Git::SVN: handle missing ref_id case correctly

[Ramkumar Ramachandra <artagnon@gmail.com>]

$ENV{GIT_SVN_ID} will return a string, so check it with defined. Also,
ref_id should not match "refs/remotes/".

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
 perl/Git/SVN.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/perl/Git/SVN.pm b/perl/Git/SVN.pm
index d9a52a5..06ff216 100644
--- a/perl/Git/SVN.pm
+++ b/perl/Git/SVN.pm
@@ -40,7 +40,7 @@ BEGIN {
 our $_follow_parent  = 1;
 our $_minimize_url   = 'unset';
 our $default_repo_id = 'svn';
-our $default_ref_id  = $ENV{GIT_SVN_ID} || 'git-svn';
+our $default_ref_id  = defined $ENV{GIT_SVN_ID} ? $ENV{GIT_SVN_ID} : 'git-svn';
 
 my ($_gc_nr, $_gc_period);
 
@@ -2365,7 +2365,7 @@ sub _new {
 
 	# Older repos imported by us used $GIT_DIR/svn/foo instead of
 	# $GIT_DIR/svn/refs/remotes/foo when tracking refs/remotes/foo
-	if ($ref_id =~ m{^refs/remotes/(.*)}) {
+	if ($ref_id =~ m{^refs/remotes/(.+)}) {
 		my $old_dir = "$ENV{GIT_DIR}/svn/$1";
 		if (-d $old_dir && ! -d $dir) {
 			$dir = $old_dir;
-- 
2.2.1