Index: src/Common/Stats/Counter.h
===================================================================
--- src/Common/Stats/Counter.h	(revision fca6ca6816f73824e68d0513650f1c4deefd27b1)
+++ src/Common/Stats/Counter.h	(revision b8665e3c26703eff3fd484461181d10e4ebc049a)
@@ -37,4 +37,5 @@
 			class SimpleCounter {
 			public:
+				inline void operator++() {}
 				inline void operator++(int) {}
 				inline void operator+=(size_t) {}
@@ -84,4 +85,5 @@
 				virtual void print(std::ostream & os) override { os << count; }
 
+				inline void operator++()             { if(!enabled) return; count++;        }
 				inline void operator++(int)          { if(!enabled) return; count++;        }
 				inline void operator+=(size_t value) { if(!enabled) return; count += value; }