[easytag] Check that a ETFileInfo is valid before freeing

[David King <davidk src gnome org>]

commit cc896641ccf039650548c7992031c93c31f798b7
Author: David King <amigadave amigadave com>
Date:   Sat Jan 12 14:24:42 2013 +0000

    Check that a ETFileInfo is valid before freeing
    
    Avoids a critical warning when saving a file.

 src/et_core.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/et_core.c b/src/et_core.c
index 9d95e88..99ce6a7 100644
--- a/src/et_core.c
+++ b/src/et_core.c
@@ -2052,7 +2052,10 @@ gboolean ET_Free_File_List_Item (ET_File *ETFile)
             ET_Free_File_Tag_List (ETFile->FileTagListBak);
         }
         /* Frees infos of ETFileInfo */
-        ET_Free_File_Info_Item (ETFile->ETFileInfo);
+        if (ETFile->ETFileInfo)
+        {
+            ET_Free_File_Info_Item (ETFile->ETFileInfo);
+        }
         g_free(ETFile->ETFileExtension);
         g_free(ETFile);
         ETFile = NULL;