Missing destructor
diff --git a/src/core/lib/transport/bdp_estimator.h b/src/core/lib/transport/bdp_estimator.h
index d8f5f8b..a4acf30 100644
--- a/src/core/lib/transport/bdp_estimator.h
+++ b/src/core/lib/transport/bdp_estimator.h
@@ -35,7 +35,7 @@
 class BdpEstimator {
  public:
   explicit BdpEstimator(const char *name);
-  ~BdpEstimator();
+  ~BdpEstimator() {}
 
   // Returns true if a reasonable estimate could be obtained
   bool EstimateBdp(int64_t *estimate_out) const {