Cleanup: Provided connection_send_bytes() to avoid direct access to con->send()

src/client.c

@@ -627,7 +627,7 @@ admin_format_t client_get_admin_format_by_content_negotiation(client_t *client)
 /* helper function for sending the data to a client */
 int client_send_bytes(client_t *client, const void *buf, unsigned len)
 {
-    int ret = client->con->send(client->con, buf, len);
+    int ret = connection_send_bytes(client->con, buf, len);
 
     if (client->con->error)
         ICECAST_LOG_DEBUG("Client connection died");

src/connection.c

@@ -297,6 +297,11 @@ void connection_uses_tls(connection_t *con)
 #endif
 }
 
+ssize_t connection_send_bytes(connection_t *con, const void *buf, size_t len)
+{
+    return con->send(con, buf, len);
+}
+
 ssize_t connection_read_bytes(connection_t *con, void *buf, size_t len)
 {
     ssize_t done = 0;

src/connection.h

@@ -60,6 +60,7 @@ int connection_complete_source(source_t *source, int response);
 void connection_queue(connection_t *con);
 void connection_uses_tls(connection_t *con);
 
+ssize_t connection_send_bytes(connection_t *con, const void *buf, size_t len);
 ssize_t connection_read_bytes(connection_t *con, void *buf, size_t len);
 int connection_read_put_back(connection_t *con, const void *buf, size_t len);