searchidx: use cached local $@ copy

umask should never fail and set $@, but use the cached local
to be more explicit just in case.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index e4e3c81b..fd0d320e 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -620,7 +620,7 @@ sub with_umask {
         my $rv = eval { $cb->() };
         my $err = $@;
         umask $old;
-        die $err if $@;
+        die $err if $err;
         $rv;
 }