[virt-tools-list] [virt-viewer 3/4] window: Adjust get_image_format() prototype

[Christophe Fergeau]

This adds an unused parameter, but lets us get rid of this new warning
with gcc 8:

virt-viewer-window.c: In function 'get_image_format':
virt-viewer-window.c:930:33: warning: cast between incompatible function types from 'GHashTable * (*)(void)' {aka 'struct _GHashTable * (*)(void)'} to 'void * (*)(void *)' [-Wcast-function-type]
     g_once(&image_formats_once, (GThreadFunc)init_image_formats, NULL);

Signed-off-by: Christophe Fergeau <cfergeau at redhat.com>
---
 src/virt-viewer-window.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/virt-viewer-window.c b/src/virt-viewer-window.c
index af3441f..2be230a 100644
--- a/src/virt-viewer-window.c
+++ b/src/virt-viewer-window.c
@@ -910,7 +910,7 @@ static void add_if_writable (GdkPixbufFormat *data, GHashTable *formats)
     }
 }
 
-static GHashTable *init_image_formats(void)
+static GHashTable *init_image_formats(G_GNUC_UNUSED gpointer user_data)
 {
     GHashTable *format_map;
     GSList *formats = gdk_pixbuf_get_formats();
-- 
2.17.1