[librsvg/no-mime-type] Pass required out parameter

[Emmanuele Bassi <ebassi src gnome org>]

commit 6227e50743a36ff0002c7df49686aea5b9391228
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Nov 18 17:15:22 2018 +0000

    Pass required out parameter
    
    After commit d9464d20108ee6adb322cfa12fd849d637e5d783,
    rsvg_decode_data_uri() requires a non-nullable `mime_type` out argument,
    instead of allowing it to be NULL.
    
    This means that all callers on the C side need to pass a `mime_type`
    argument, even if they will ignore it.

 librsvg/rsvg-handle.c | 4 +++-
 librsvg/rsvg-load.c   | 6 +++++-
 2 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/librsvg/rsvg-handle.c b/librsvg/rsvg-handle.c
index ecdffdfb..a3c4e263 100644
--- a/librsvg/rsvg-handle.c
+++ b/librsvg/rsvg-handle.c
@@ -481,6 +481,7 @@ RsvgHandle *
 rsvg_handle_new_from_file (const gchar *file_name, GError **error)
 {
     gchar *base_uri;
+    gchar *mime_type;
     char *data;
     gsize data_len;
     RsvgHandle *handle = NULL;
@@ -507,7 +508,7 @@ rsvg_handle_new_from_file (const gchar *file_name, GError **error)
         return NULL;
     }
 
-    data = _rsvg_io_acquire_data (base_uri, base_uri, NULL, &data_len, NULL, error);
+    data = _rsvg_io_acquire_data (base_uri, base_uri, &mime_type, &data_len, NULL, error);
 
     if (data) {
         handle = rsvg_handle_new ();
@@ -519,6 +520,7 @@ rsvg_handle_new_from_file (const gchar *file_name, GError **error)
         g_free (data);
     }
 
+    g_free (mime_type);
     g_free (base_uri);
     g_object_unref (file);
 
diff --git a/librsvg/rsvg-load.c b/librsvg/rsvg-load.c
index 6dc1602d..127bc4b7 100644
--- a/librsvg/rsvg-load.c
+++ b/librsvg/rsvg-load.c
@@ -269,10 +269,14 @@ rsvg_load_handle_xml_xinclude (RsvgHandle *handle, const char *url)
     GInputStream *stream;
     GError *err = NULL;
     xmlParserCtxtPtr xml_parser;
+    gchar *mime_type;
 
     g_assert (handle->priv->load != NULL);
 
-    stream = _rsvg_handle_acquire_stream (handle, url, NULL, NULL);
+    stream = _rsvg_handle_acquire_stream (handle, url, &mime_type, NULL);
+
+    g_free (mime_type);
+
     if (stream) {
         xml_parser = create_xml_stream_parser (handle->priv->load,
                                                stream,