[easytag] Fix string leak when reading WavPack tags

[David King <davidk src gnome org>]

commit da0cad5c8b08ed411c1cb356c86d2dd5a7b72f4d
Author: David King <amigadave amigadave com>
Date:   Sun Dec 21 22:33:25 2014 +0000

    Fix string leak when reading WavPack tags

 src/tags/wavpack_tag.c |   26 ++++++++++++++++++++++----
 1 files changed, 22 insertions(+), 4 deletions(-)
---
diff --git a/src/tags/wavpack_tag.c b/src/tags/wavpack_tag.c
index af335de..8f14e24 100644
--- a/src/tags/wavpack_tag.c
+++ b/src/tags/wavpack_tag.c
@@ -146,11 +146,20 @@ wavpack_tag_read_file_tag (GFile *file,
 
     if (field2 && FileTag->disc_total == NULL)
     {
-        FileTag->disc_total = et_disc_number_to_string (atoi (Try_To_Validate_Utf8_String (field2)));
+        gchar *tmp;
+
+        tmp = Try_To_Validate_Utf8_String (field2);
+        FileTag->disc_total = et_disc_number_to_string (atoi (tmp));
+        g_free (tmp);
     }
+
     if (length > 0 && FileTag->disc_number == NULL)
     {
-        FileTag->disc_number = et_disc_number_to_string (atoi (Try_To_Validate_Utf8_String (field)));
+        gchar *tmp;
+
+        tmp = Try_To_Validate_Utf8_String (field);
+        FileTag->disc_number = et_disc_number_to_string (atoi (tmp));
+        g_free (tmp);
     }
 
     memset (field, '\0', MAXLEN);
@@ -180,11 +189,20 @@ wavpack_tag_read_file_tag (GFile *file,
 
     if (field2 && FileTag->track_total == NULL)
     {
-        FileTag->track_total = et_track_number_to_string (atoi (Try_To_Validate_Utf8_String (field2)));
+        gchar *tmp;
+
+        tmp = Try_To_Validate_Utf8_String (field2);
+        FileTag->track_total = et_track_number_to_string (atoi (tmp));
+        g_free (tmp);
     }
+
     if (length > 0 && FileTag->track == NULL)
     {
-        FileTag->track = et_track_number_to_string (atoi (Try_To_Validate_Utf8_String (field)));
+        gchar *tmp;
+
+        tmp = Try_To_Validate_Utf8_String (field);
+        FileTag->track = et_track_number_to_string (atoi (tmp));
+        g_free (tmp);
     }
 
     memset (field, '\0', MAXLEN);