contrib/snmp-probe-host.px: Work-around for Windows systems.

They don't return an error, but `success' and a string stating
  NOSUCHOBJECT.
Just great.

diff --git a/contrib/snmp-probe-host.px b/contrib/snmp-probe-host.px
index 9130ece..1cfaa07 100755 (executable)
--- a/contrib/snmp-probe-host.px
+++ b/contrib/snmp-probe-host.px
@@ -99,6 +99,14 @@ sub probe_one
       {
         return;
       }
+      if (!defined ($status))
+      {
+        return;
+      }
+      if ("$status" eq 'NOSUCHOBJECT')
+      {
+        return;
+      }
     }
     else
     {