[easytag] Set the GError when failing to read ID3 tags

[David King <davidk src gnome org>]

commit cef074fd5f2bd538817577d5ca93d6d4e3c3c20e
Author: David King <amigadave amigadave com>
Date:   Sun Nov 2 18:48:42 2014 +0000

    Set the GError when failing to read ID3 tags

 src/tags/id3v24_tag.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/tags/id3v24_tag.c b/src/tags/id3v24_tag.c
index 76ab6f2..b18de6a 100644
--- a/src/tags/id3v24_tag.c
+++ b/src/tags/id3v24_tag.c
@@ -227,6 +227,8 @@ id3tag_read_file_tag (GFile *gfile,
     if ((file = id3_file_open (filename, ID3_FILE_MODE_READONLY)) == NULL)
     {
         g_free (filename);
+        g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "%s",
+                     _("Error reading tags from file"));
         return FALSE;
     }
 
@@ -236,6 +238,8 @@ id3tag_read_file_tag (GFile *gfile,
     ||   (tag->nframes == 0))
     {
         id3_file_close(file);
+        g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "%s",
+                     _("Error reading tags from file"));
         return FALSE;
     }