[evince] shell: Pass NULL to g_app_info_launch_uris() when no uri is given

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 89c9a5985826e9ad624a5a695935eea13bd4ef08
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Fri Aug 15 17:44:16 2014 +0200

    shell: Pass NULL to g_app_info_launch_uris() when no uri is given

 shell/ev-application.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/shell/ev-application.c b/shell/ev-application.c
index 95d4103..af3dcab 100644
--- a/shell/ev-application.c
+++ b/shell/ev-application.c
@@ -217,6 +217,7 @@ ev_spawn (const char     *uri,
 
        if (app != NULL) {
                 GList uri_list;
+                GList *uris = NULL;
                GdkAppLaunchContext *ctx;
 
                ctx = gdk_display_get_app_launch_context (gdk_screen_get_display (screen));
@@ -229,10 +230,12 @@ ev_spawn (const char     *uri,
                  * consider using g_app_info_launch_uris() instead.
                  * See https://bugzilla.gnome.org/show_bug.cgi?id=644604
                  */
-                uri_list.data = (gchar *)uri;
-                uri_list.prev = uri_list.next = NULL;
-               g_app_info_launch_uris (app, &uri_list,
-                                        G_APP_LAUNCH_CONTEXT (ctx), &error);
+                if (uri) {
+                        uri_list.data = (gchar *)uri;
+                        uri_list.prev = uri_list.next = NULL;
+                        uris = &uri_list;
+                }
+               g_app_info_launch_uris (app, uris, G_APP_LAUNCH_CONTEXT (ctx), &error);
 
                g_object_unref (app);
                g_object_unref (ctx);