config: ignore missing config files

There's no reason for us to have git-config(1) warn users when a
config file is entirely missing.

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index da443e580eb3a72692d10541690140b53b23314c..2ff266f184499d2660f755ffc75e8be01d80f9d2 100644 (file)
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -147,6 +147,7 @@ sub default_file {
 sub git_config_dump {
        my ($file) = @_;
        my (%section_seen, @section_order);
+       return {} unless -e $file;
        my @cmd = (qw/git config/, "--file=$file", '-l');
        my $cmd = join(' ', @cmd);
        my $fh = popen_rd(\@cmd) or die "popen_rd failed for $file: $!\n";