[frogr] Added missing check

[Mario Sanchez Prada <msanchez src gnome org>]

commit f1bf1641f279004837196919f89098d4eaa5544b
Author: Mario Sanchez Prada <msanchez igalia com>
Date:   Mon May 2 17:40:22 2011 +0200

    Added missing check

 src/flicksoup/fsp-parser.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/flicksoup/fsp-parser.c b/src/flicksoup/fsp-parser.c
index 2977658..6669e5e 100644
--- a/src/flicksoup/fsp-parser.c
+++ b/src/flicksoup/fsp-parser.c
@@ -203,7 +203,8 @@ _get_error_from_response                (xmlDoc *doc,
       if (node != NULL)
         {
           /* Parse the actual error found in the response */
-          g_error_free (err);
+          if (err)
+            g_error_free (err);
           err = _parse_error_from_node (node, error_method);
         }
     }