fix: resume and pause timing before measurements

If we don't do this at the right place, we'll get increased timings for smaller benchmarks.

Author: not-matthias

google_benchmark/include/benchmark/benchmark.h

@@ -1065,16 +1065,16 @@ struct State::StateIterator {
   bool operator!=(StateIterator const&) const {
     if (BENCHMARK_BUILTIN_EXPECT(cached_ != 0, true)) return true;
 
-
 #if defined(CODSPEED_INSTRUMENTATION)
     measurement_stop();
+#endif
+    parent_->FinishKeepRunning();
 
+#if defined(CODSPEED_INSTRUMENTATION)
     if (parent_->codspeed_ != NULL) {
       parent_->codspeed_->end_benchmark();
     }
 #endif
-
-    parent_->FinishKeepRunning();
     return false;
   }
 
@@ -1087,13 +1087,15 @@ inline BENCHMARK_ALWAYS_INLINE State::StateIterator State::begin() {
   return StateIterator(this);
 }
 inline BENCHMARK_ALWAYS_INLINE State::StateIterator State::end() {
-  StartKeepRunning();
-
 #ifdef CODSPEED_INSTRUMENTATION
   if (this->codspeed_ != NULL) {
     this->codspeed_->start_benchmark(name_);
   }
+#endif
+  
+  StartKeepRunning();
 
+#ifdef CODSPEED_INSTRUMENTATION
   measurement_start();
 #endif