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}
diff --git a/rtc_base/async_resolver_interface.cc b/rtc_base/async_resolver_interface.cc
index c8d6ab8..ff8c87e 100644
--- a/rtc_base/async_resolver_interface.cc
+++ b/rtc_base/async_resolver_interface.cc
@@ -16,4 +16,4 @@
 
 AsyncResolverInterface::~AsyncResolverInterface() = default;
 
-};  // namespace rtc
+}  // namespace rtc