fdmap: short-circuit __expire if count == 0

This quiets down our logs when acceptors do not die quickly
enough for us.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/yahns/fdmap.rb b/lib/yahns/fdmap.rb
index 5ba4399..bac327e 100644
--- a/lib/yahns/fdmap.rb
+++ b/lib/yahns/fdmap.rb
@@ -79,6 +79,7 @@ class Yahns::Fdmap # :nodoc:
   # We should not be calling this too frequently, it is expensive
   # This is called while @fdmap_mtx is held
   def __expire(timeout)
+    return if @count == 0
     nr = 0
     now = Time.now.to_f
     (now - @last_expire) >= 1.0 or return # don't expire too frequently