webrtc: Remove semicolons.

Bug: chromium:926235
Change-Id: I66c10ab3df38adf87152d1f18cc8162afedca7e4
Reviewed-on: https://webrtc-review.googlesource.com/c/123560
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26780}

p2p/base/port.h

@@ -384,7 +384,7 @@ class Port : public PortInterface,
 
   int16_t network_cost() const { return network_cost_; }
 
-  void GetStunStats(absl::optional<StunStats>* stats) override{};
+  void GetStunStats(absl::optional<StunStats>* stats) override {}
 
  protected:
   enum { MSG_DESTROY_IF_DEAD = 0, MSG_FIRST_AVAILABLE };