gitweb: Fix "Use of uninitialized value" warning in git_feed
Initial (root) commit has no parents, and $co{'parent'} is
undefined. Use '--root' for initial commit.
This fixes "Use of uninitialized value in open at gitweb/gitweb.perl
line 4925." warning.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 17d8efb..5c7011a 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -5040,7 +5040,8 @@
# get list of changed files
open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
- $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
+ $co{'parent'} || "--root",
+ $co{'id'}, "--", (defined $file_name ? $file_name : ())
or next;
my @difftree = map { chomp; $_ } <$fd>;
close $fd
