[easytag] Fix two memory leaks in CDDB dialog

[David King <davidk src gnome org>]

commit 75c025779d7992b2ddfb89f47a04d80ad2a0ce35
Author: David King <amigadave amigadave com>
Date:   Wed Oct 8 19:31:18 2014 +0100

    Fix two memory leaks in CDDB dialog
    
    Store a pointer to the start of the GLists, so that the lists can be
    freed later.

 src/cddb_dialog.c |   18 ++++++++++++------
 1 files changed, 12 insertions(+), 6 deletions(-)
---
diff --git a/src/cddb_dialog.c b/src/cddb_dialog.c
index 583d6f8..584136f 100644
--- a/src/cddb_dialog.c
+++ b/src/cddb_dialog.c
@@ -1146,10 +1146,16 @@ Cddb_Get_Album_Tracks_List (EtCDDBDialog *self, GtkTreeSelection* selection)
                 g_free(cddbtrackalbum);
             }else
             {
-                if (TrackOffsetList && TrackOffsetList->next)
+                GList *l;
+
+                for (l = TrackOffsetList; l != NULL; l = g_list_next (l))
                 {
-                    cddbtrackalbum->duration = ( ((CddbTrackFrameOffset 
*)TrackOffsetList->next->data)->offset - ((CddbTrackFrameOffset *)TrackOffsetList->data)->offset ) / 75; // 
Calculate time in seconds
-                    TrackOffsetList = TrackOffsetList->next;
+                    if (l->next)
+                    {
+                        cddbtrackalbum->duration = (((CddbTrackFrameOffset *)l->next->data)->offset
+                                                     - ((CddbTrackFrameOffset *)l->data)->offset)
+                                                    / 75; /* Calculate time in seconds. */
+                    }
                 }
                 cddbalbum->track_list = g_list_append(cddbalbum->track_list,cddbtrackalbum);
             }
@@ -1198,9 +1204,7 @@ Cddb_Get_Album_Tracks_List (EtCDDBDialog *self, GtkTreeSelection* selection)
 
     show_album_info (self, gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->album_list_view)));
 
-    // Frees 'TrackOffsetList'
     g_list_free_full (TrackOffsetList, (GDestroyNotify)g_free);
-    TrackOffsetList = NULL;
     return TRUE;
 }
 
@@ -3266,7 +3270,9 @@ et_cddb_dialog_search_from_selection (EtCDDBDialog *self)
     num_tracks = file_selectedcount;
     query_string = g_strdup("");
 
-    for (l = g_list_reverse (file_iterlist); l != NULL; l = g_list_next (l))
+    file_iterlist = g_list_reverse (file_iterlist);
+
+    for (l = file_iterlist; l != NULL; l = g_list_next (l))
     {
         ET_File *etfile;
         gulong secs = 0;