Redirect to `IO::NULL` for the portability

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/pstore/pstore.gemspec b/lib/pstore/pstore.gemspec
index 8425795afe..9b1c17f6b9 100644
--- a/lib/pstore/pstore.gemspec
+++ b/lib/pstore/pstore.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }