[gtk+/portal] Add a forgotten return

[Matthias Clasen <matthiasc src gnome org>]

commit b66594b2ed88eac77361b062f9c0a1c60d252d78
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jul 6 22:56:17 2016 -0400

    Add a forgotten return

 gtk/gtkprintoperation-portal.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkprintoperation-portal.c b/gtk/gtkprintoperation-portal.c
index 6ed37ae..7eb7ffc 100644
--- a/gtk/gtkprintoperation-portal.c
+++ b/gtk/gtkprintoperation-portal.c
@@ -193,6 +193,7 @@ portal_job_complete (GtkPrintJob  *job,
     {
       g_warning ("Print job failed: %s", error->message);
       op->priv->error = g_error_copy (error);
+      return;
     }
 
   op_portal->file_written = TRUE;
@@ -274,7 +275,6 @@ finish_print (PortalData        *portal,
   GtkPrintOperationPortal *op_portal;
   cairo_t *cr;
 
-
   if (portal->do_print)
     {
       gtk_print_operation_set_print_settings (op, settings);