un.rb: suppress warning

* lib/un.rb (wait_writable): show error messages only if -v is given.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39368 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/un.rb b/lib/un.rb
index e06e0e759b..2f2d3e21be 100644
--- a/lib/un.rb
+++ b/lib/un.rb
@@ -246,8 +246,10 @@ def wait_writable
         break
       rescue Errno::EACCES => e
         raise if n and (n -= 1) <= 0
-        puts e
-        STDOUT.flush
+        if verbose
+          puts e
+          STDOUT.flush
+        end
         sleep wait
         retry
       end