test and fix client expiry

This is rarely-called code, but we need to be sure we can expire
clients correctly when thresholds are reached.  We also correctly
handle negative values of the client_expire_threshold directive.

1 files changed, 0 insertions, 1 deletions

diff --git a/lib/yahns/config.rb b/lib/yahns/config.rb
index 1d4d110..d38c090 100644
--- a/lib/yahns/config.rb
+++ b/lib/yahns/config.rb
@@ -225,7 +225,6 @@ class Yahns::Config # :nodoc:
   # global
   def client_expire_threshold(val)
     var = _check_in_block(nil, :client_expire_threshold)
-    val > 0 or raise ArgumentError, "#{var} must be > 0"
     case val
     when Float
       val <= 1.0 or raise ArgumentError, "#{var} must be <= 1.0 if a ratio"