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_packet_socket.cc b/rtc_base/async_packet_socket.cc
index 12afbeb..a708fae 100644
--- a/rtc_base/async_packet_socket.cc
+++ b/rtc_base/async_packet_socket.cc
@@ -42,4 +42,4 @@
   }
 }
 
-};  // namespace rtc
+}  // namespace rtc