[gtk+] cups: Annotate a call whose return value we don't care about

[Matthias Clasen <matthiasc src gnome org>]

commit 0ee14211b117725eff658bf78fbabce9039ab443
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 17 15:58:24 2015 -0400

    cups: Annotate a call whose return value we don't care about
    
    We're closing this fd, but we're not going to do anything else
    if that fails. Annotate to let coverity see this.

 modules/printbackends/file/gtkprintbackendfile.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/modules/printbackends/file/gtkprintbackendfile.c 
b/modules/printbackends/file/gtkprintbackendfile.c
index 44c3ffb..6d98d0f 100644
--- a/modules/printbackends/file/gtkprintbackendfile.c
+++ b/modules/printbackends/file/gtkprintbackendfile.c
@@ -390,7 +390,7 @@ file_print_cb_locked (GtkPrintBackendFile *print_backend,
   GtkRecentManager *recent_manager;
 
   if (ps->target_io_stream != NULL)
-    g_output_stream_close (G_OUTPUT_STREAM (ps->target_io_stream), NULL, NULL);
+    (void)g_output_stream_close (G_OUTPUT_STREAM (ps->target_io_stream), NULL, NULL);
 
   if (ps->callback)
     ps->callback (ps->job, ps->user_data, error);