[tracker-miners/wip/carlosg/shuffle-libtracker-miner: 106/116] tracker-miner: Fix cancellation of g_file_enumerator_next_files_async

[Carlos Garnacho <carlosg src gnome org>]

commit 2cf7066b7b5be02f821b41b020dcd9dee18ebe8a
Author: Andrea Azzarone <andrea azzarone canonical com>
Date:   Mon Apr 1 16:52:15 2019 +0100

    tracker-miner: Fix cancellation of g_file_enumerator_next_files_async
    
    The async op is not owner of the user data, so it may be actually gone in the
    GAsyncReadyCallback. Ensure we only use it on success or on other errors than
    cancelled.
    
    Closes: https://gitlab.gnome.org/GNOME/tracker/issues/86

 src/libtracker-miner/tracker-crawler.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/libtracker-miner/tracker-crawler.c b/src/libtracker-miner/tracker-crawler.c
index 10f270a4f..56c3a45e9 100644
--- a/src/libtracker-miner/tracker-crawler.c
+++ b/src/libtracker-miner/tracker-crawler.c
@@ -903,7 +903,7 @@ enumerate_next_cb (GObject      *object,
 {
        DataProviderData *dpd;
        GList *info;
-       GError *error = NULL;
+       g_autoptr(GError) error = NULL;
 
        info = g_file_enumerator_next_files_finish (G_FILE_ENUMERATOR (object), result, &error);
        dpd = user_data;
@@ -922,9 +922,9 @@ enumerate_next_cb (GObject      *object,
                                g_warning ("Could not enumerate next item in container / directory '%s', %s",
                                           uri, error ? error->message : "no error given");
                                g_free (uri);
+                       } else {
+                               return;
                        }
-
-                       g_clear_error (&error);
                } else {
                        /* Done enumerating, start processing what we got ... */
                        data_provider_data_add (dpd);