[gthumb] do not try to apply color profile to modified images

[Paolo Bacchilega <paobac src gnome org>]

commit 1c89334abe49813affbc4b969a17921312f8d1fc
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sat Jul 1 19:25:33 2017 +0200

    do not try to apply color profile to modified images

 extensions/image_viewer/gth-image-viewer-page.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/extensions/image_viewer/gth-image-viewer-page.c b/extensions/image_viewer/gth-image-viewer-page.c
index b19bc31..61796b8 100644
--- a/extensions/image_viewer/gth-image-viewer-page.c
+++ b/extensions/image_viewer/gth-image-viewer-page.c
@@ -286,7 +286,7 @@ _gth_image_viewer_page_load_with_preloader (GthImageViewerPage  *self,
                                            GAsyncReadyCallback  callback,
                                            gpointer             user_data)
 {
-       if (self->priv->apply_icc_profile) {
+       if ((file_data != NULL) && self->priv->apply_icc_profile) {
                char *monitor_name = NULL;
 
                if (_gtk_window_get_monitor_info (GTK_WINDOW (self->priv->browser), NULL, NULL, 
&monitor_name)) {