[gnumeric] Icons: don't add icon path if we don't have a gui.

[Morten Welinder <mortenw src gnome org>]

commit 276bffcc6776df9343a4f4b99b52cadb023764b5
Author: Morten Welinder <terra gnome org>
Date:   Sat Dec 27 18:24:41 2014 -0500

    Icons: don't add icon path if we don't have a gui.

 src/libgnumeric.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/libgnumeric.c b/src/libgnumeric.c
index e8e8955..9941710 100644
--- a/src/libgnumeric.c
+++ b/src/libgnumeric.c
@@ -298,8 +298,11 @@ gnm_init (void)
 
        libgoffice_init ();
        _gnm_register_resource ();
-       gtk_icon_theme_add_resource_path (gtk_icon_theme_get_default (),
-                                         "/org/gnumeric/gnumeric/icons");
+       if (gdk_screen_get_default ()) {
+               /* Only when we have a gui.  */
+               gtk_icon_theme_add_resource_path (gtk_icon_theme_get_default (),
+                                                 "/org/gnumeric/gnumeric/icons");
+       }
        gnm_register_ui_files ();
        gnm_register_imgs_files ();
        go_plugin_service_define ("function_group",