[libsoup/return-if-client_io-is-null] Exit callback 'response_network_stream_read_data_cb' if client_io is null

[Diego Pino <dpino src gnome org>]

commit fbf88a67bc0f4cccbdf01aefcb529bbf0926d5d4
Author: Diego Pino Garcia <dpino igalia com>
Date:   Tue May 11 14:47:29 2021 +0800

    Exit callback 'response_network_stream_read_data_cb' if client_io is null

 libsoup/soup-client-message-io-http1.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/libsoup/soup-client-message-io-http1.c b/libsoup/soup-client-message-io-http1.c
index b2279a7c..4bbf680f 100644
--- a/libsoup/soup-client-message-io-http1.c
+++ b/libsoup/soup-client-message-io-http1.c
@@ -516,6 +516,9 @@ response_network_stream_read_data_cb (SoupMessage *msg,
 {
         SoupClientMessageIOHTTP1 *client_io = (SoupClientMessageIOHTTP1 *)soup_message_get_io_data (msg);
 
+        if (!client_io)
+                return;
+
         if (client_io->base.read_state < SOUP_MESSAGE_IO_STATE_BODY_START)
                 client_io->metrics->response_header_bytes_received += count;
         else