psql(1) will fail if the current working directory is not accessible

Index: src/cats/make_catalog_backup.pl.in
--- src/cats/make_catalog_backup.pl.in.orig
+++ src/cats/make_catalog_backup.pl.in
@@ -47,6 +47,7 @@ sub setup_env_pgsql
     my %args = @_;
     my $username = getpwuid $ENV{'UID'}; 
     umask(0077);
+    chdir($wd);
 
     if ($args{db_address}) {
 	$ENV{PGHOST}=$args{db_address};
