Assorted logging pedantry

This cl fixes various minor issues found during a quick scan of the current log
usage.

Bug: webrtc:8529
Change-Id: I1e1eb02ef220177dbb327203509736ad7f70cc1c
Reviewed-on: https://webrtc-review.googlesource.com/52262
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Henrik Grunell <henrikg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21996}

rtc_base/asyncudpsocket.cc

@@ -112,8 +112,8 @@ void AsyncUDPSocket::OnReadEvent(AsyncSocket* socket) {
     // TODO: Do something better like forwarding the error to the user.
     SocketAddress local_addr = socket_->GetLocalAddress();
     RTC_LOG(LS_INFO) << "AsyncUDPSocket[" << local_addr.ToSensitiveString()
-                     << "] "
-                     << "receive failed with error " << socket_->GetError();
+                     << "] receive failed with error "
+                     << socket_->GetError();
     return;
   }