event/SocketMonitor: use class SocketDescriptor

src/output/plugins/httpd/HttpdClient.cxx

@@ -185,7 +185,8 @@ HttpdClient::SendResponse()
 	return true;
 }
 
-HttpdClient::HttpdClient(HttpdOutput &_httpd, int _fd, EventLoop &_loop,
+HttpdClient::HttpdClient(HttpdOutput &_httpd, SocketDescriptor _fd,
+			 EventLoop &_loop,
 			 bool _metadata_supported)
 	:BufferedSocket(_fd, _loop),
 	 httpd(_httpd),

src/output/plugins/httpd/HttpdClient.hxx

@@ -131,7 +131,7 @@ public:
 	 * @param httpd the HTTP output device
 	 * @param _fd the socket file descriptor
 	 */
-	HttpdClient(HttpdOutput &httpd, int _fd, EventLoop &_loop,
+	HttpdClient(HttpdOutput &httpd, SocketDescriptor _fd, EventLoop &_loop,
 		    bool _metadata_supported);
 
 	/**

src/output/plugins/httpd/HttpdInternal.hxx

@@ -206,7 +206,7 @@ public:
 		return HasClients();
 	}
 
-	void AddClient(int fd);
+	void AddClient(SocketDescriptor fd);
 
 	/**
 	 * Removes a client from the httpd_output.clients linked list.

src/output/plugins/httpd/HttpdOutputPlugin.cxx

@@ -118,7 +118,7 @@ HttpdOutput::Unbind()
  * HttpdOutput.clients linked list.
  */
 inline void
-HttpdOutput::AddClient(int fd)
+HttpdOutput::AddClient(SocketDescriptor fd)
 {
 	auto *client = new HttpdClient(*this, fd, GetEventLoop(),
 				       !encoder->ImplementsTag());
@@ -184,7 +184,7 @@ HttpdOutput::OnAccept(int fd, SocketAddress address, gcc_unused int uid)
 
 	/* can we allow additional client */
 	if (open && (clients_max == 0 || clients.size() < clients_max))
-		AddClient(fd);
+		AddClient(SocketDescriptor(fd));
 	else
 		close_socket(fd);
 }