[eog] Check if an editor has been set before comparing it to other apps

[Felix Riemann <friemann src gnome org>]

commit 349676e43252477219d07cad279861bd9484d94d
Author: Felix Riemann <friemann gnome org>
Date:   Wed Oct 6 21:18:49 2010 +0200

    Check if an editor has been set before comparing it to other apps
    
    Fixes critical warnings if no editor application has been set.

 src/eog-window.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/eog-window.c b/src/eog-window.c
index 1fc4659..d08f1cb 100644
--- a/src/eog-window.c
+++ b/src/eog-window.c
@@ -985,7 +985,7 @@ eog_window_update_openwith_menu (EogWindow *window, EogImage *image)
                 GAppInfo *app = iter->data;
                 gchar name[64];
 
-                if (g_app_info_equal (editor_app, app)) {
+                if (editor_app != NULL && g_app_info_equal (editor_app, app)) {
                         edit_button_active = TRUE;
                 }