317/376: Fix another operator precedence issue found by Perl 5.20

[Ludovic Courtès]

civodul pushed a commit to tag 1.8
in repository guix.

commit bf78a27ac995edcd34d821b9ef9061b475f51b67
Author: Eelco Dolstra <address@hidden>
Date:   Fri Dec 5 19:25:13 2014 +0100

    Fix another operator precedence issue found by Perl 5.20
---
 scripts/nix-build.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/scripts/nix-build.in b/scripts/nix-build.in
index f8cf318..9127d90 100755
--- a/scripts/nix-build.in
+++ b/scripts/nix-build.in
@@ -276,7 +276,7 @@ foreach my $expr (@exprs) {
     while (<OUTPATHS>) {chomp; push @outPaths, $_;}
     if (!close OUTPATHS) {
         die "nix-store killed by signal " . ($? & 127) . "\n" if ($? & 127);
-        exit $? >> 8 || 1;
+        exit ($? >> 8 || 1);
     }
 
     next if $dryRun;