message: make LookupWait failure something tracked by perf counter ePerfPropCacheError
diff: @@ -172,13 +172,17 @@ PropertyCache::LookupInternal(
  ret_handle=LookupWait(CompositeBucket);
  gPerfCounters->Inc(ePerfPropCacheMiss);
  } // if
  - else
  + else if (NULL!=ret_handle)
  {
  // cached or no router
  gPerfCounters->Inc(ePerfPropCacheHit);
  - } // else
  + } // else if
  } // if
  + // never supposed to be missing if property cache in play
  + if (NULL==ret_handle)
  + gPerfCounters->Inc(ePerfPropCacheError);
  +
  return(ret_handle);
  } // PropertyCache::LookupInternal
  