[sushi] font-loader: don't dereference NULL errors

[Cosimo Cecchi <cosimoc src gnome org>]

commit 4dda0a129f8636ff650f3ffc7c534e0ee8f65358
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Apr 29 18:00:31 2012 -0400

    font-loader: don't dereference NULL errors

 src/libsushi/sushi-font-loader.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libsushi/sushi-font-loader.c b/src/libsushi/sushi-font-loader.c
index 45481c6..d599a57 100644
--- a/src/libsushi/sushi-font-loader.c
+++ b/src/libsushi/sushi-font-loader.c
@@ -119,7 +119,7 @@ font_load_job_do_load (FontLoadJob *job,
   g_file_load_contents (job->file, NULL,
                         &contents, &length, NULL, error);
 
-  if (*error == NULL) {
+  if ((error != NULL) && (*error == NULL)) {
     job->face_contents = contents;
     job->face_length = length;
   }
@@ -160,7 +160,7 @@ sushi_new_ft_face_from_uri (FT_Library library,
   job = font_load_job_new (library, uri, NULL, NULL);
   font_load_job_do_load (job, error);
 
-  if (*error != NULL) {
+  if ((error != NULL) && (*error != NULL)) {
     g_object_unref (job);
     return NULL;
   }