[PATCH 3/5] spawn: remove stray variable $ndc_err

["Štěpán Němec" <stepnem@smrk.net>]

Code that could be setting it was removed in 14fa0abdcc7b.
Likewise for the double assignment to $err.

Fixes: 14fa0abdcc7b ("rewrite Linux nodatacow use in pure Perl w/o system")
---
 lib/PublicInbox/Spawn.pm | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/lib/PublicInbox/Spawn.pm b/lib/PublicInbox/Spawn.pm
index 878843a60a8d..6e33c712d8d2 100644
--- a/lib/PublicInbox/Spawn.pm
+++ b/lib/PublicInbox/Spawn.pm
@@ -293,15 +293,12 @@ ALL_LIBC
 use Inline C => $all_libc, BUILD_NOISY => 1;
 EOM
 		my $err = $@;
-		my $ndc_err = '';
-		$err = $@;
 		open(STDERR, '>&', $olderr) or warn "restore stderr: $!";
 		open(STDOUT, '>&', $oldout) or warn "restore stdout: $!";
 		if ($err) {
 			seek($fh, 0, SEEK_SET);
 			my @msg = <$fh>;
-			warn "Inline::C build failed:\n",
-				$ndc_err, $err, "\n", @msg;
+			warn "Inline::C build failed:\n", $err, "\n", @msg;
 			$all_libc = undef;
 		}
 	}
-- 
2.42.0