event/SocketMonitor: rename Get() to GetSocket()

src/zeroconf/AvahiPoll.cxx

@@ -73,7 +73,7 @@ private:
 	/* virtual methods from class SocketMonitor */
 	bool OnSocketReady(unsigned flags) noexcept {
 		received = ToAvahiWatchEvent(flags);
-		callback(this, Get().Get(), received, userdata);
+		callback(this, GetSocket().Get(), received, userdata);
 		received = AvahiWatchEvent(0);
 		return true;
 	}