[OpenMP] Add missing parenthesis in Perl module
git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@356289 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/runtime/tools/lib/LibOMP.pm b/runtime/tools/lib/LibOMP.pm
index 497b926..cff7e4a 100644
--- a/runtime/tools/lib/LibOMP.pm
+++ b/runtime/tools/lib/LibOMP.pm
@@ -16,7 +16,7 @@
sub empty($) {
my ( $var ) = @_;
- return (not exists($ENV{$var})) or (not defined($ENV{$var})) or ($ENV{$var} eq "");
+ return ((not exists($ENV{$var})) or (not defined($ENV{$var})) or ($ENV{$var} eq ""));
}; # sub empty
my ( $base, $out, $tmp );