Checkpoint. Enabling nacks back, "reverting" count statistics on nacks
diff --git a/utils/stats/load-stats.cc b/utils/stats/load-stats.cc
index d785845..4bc1e5b 100644
--- a/utils/stats/load-stats.cc
+++ b/utils/stats/load-stats.cc
@@ -66,6 +66,13 @@
 }
 
 LoadStats &
+LoadStats::operator -- (int)
+{
+  counter_ --;
+  return *this;
+}
+
+LoadStats &
 LoadStats::operator += (uint32_t amount)
 {
   counter_ += amount;