[gthumb] fixed crash when deleting files if moving to trash is not possible

[Paolo Bacchilega <paobac src gnome org>]

commit fa8ae216fce26ef72e45614aaab2bbfe50161231
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Tue Mar 26 20:01:08 2019 +0100

    fixed crash when deleting files if moving to trash is not possible

 gthumb/gth-file-source-vfs.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gthumb/gth-file-source-vfs.c b/gthumb/gth-file-source-vfs.c
index 6713d81c..0cbb4bf3 100644
--- a/gthumb/gth-file-source-vfs.c
+++ b/gthumb/gth-file-source-vfs.c
@@ -805,19 +805,23 @@ gth_file_mananger_trash_files (GtkWindow *window,
                               GList     *file_list /* GthFileData list */)
 {
        TrashData *tdata;
+       GList     *files;
        GthTask   *task;
 
        tdata = g_new0 (TrashData, 1);
        tdata->window = window;
-       tdata->files = gth_file_data_list_to_file_list (file_list);
+       tdata->files = gth_file_data_list_dup (file_list);
 
-       task = gth_trash_task_new (tdata->files);
+       files = gth_file_data_list_to_file_list (file_list);
+       task = gth_trash_task_new (files);
        g_signal_connect (task,
                          "completed",
                          G_CALLBACK (trash_task_completed_cb),
                          tdata);
 
        gth_browser_exec_task (GTH_BROWSER (window), task, GTH_TASK_FLAGS_IGNORE_ERROR);
+
+       _g_object_list_unref (files);
 }