[gthumb] image loader: do not use image is it's null

[Paolo Bacchilega <paobac src gnome org>]

commit 14f94d8474a656abf3dbb27f5611a6e652456074
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Mar 2 18:31:43 2015 +0100

    image loader: do not use image is it's null

 gthumb/gth-image-loader.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gthumb/gth-image-loader.c b/gthumb/gth-image-loader.c
index 8dfb901..db2fbd0 100644
--- a/gthumb/gth-image-loader.c
+++ b/gthumb/gth-image-loader.c
@@ -217,7 +217,8 @@ load_image_thread (GSimpleAsyncResult *result,
 
        _g_object_unref (istream);
 
-       if (! g_cancellable_is_cancelled (cancellable)
+       if ((image != NULL)
+           && ! g_cancellable_is_cancelled (cancellable)
            && (self->priv->out_profile != NULL)
            && gth_image_get_icc_profile (image) != NULL)
        {