Fix build with hardened security flags

| ../gupnp-1.2.6/examples/get-volume.c: In function 'on_introspection':
| ../gupnp-1.2.6/examples/get-volume.c:53:17: error: format not a string literal and no format arguments [-Werror=format-security]
|    53 |                 g_critical (error->message);
|       |                 ^~~~~~~~~~
| ../gupnp-1.2.6/examples/get-volume.c:114:17: error: format not a string literal and no format arguments [-Werror=format-security]
|   114 |                 g_critical (error->message);
|       |                 ^~~~~~~~~~
| ../gupnp-1.2.6/examples/get-volume.c: In function 'main':
| ../gupnp-1.2.6/examples/get-volume.c:150:17: error: format not a string literal and no format arguments [-Werror=format-security]
|   150 |                 g_error (error->message);
|       |                 ^~~~~~~

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/examples/get-volume.c b/examples/get-volume.c
index 4601014..923581c 100644
--- a/examples/get-volume.c
+++ b/examples/get-volume.c
@@ -50,7 +50,7 @@ on_introspection (GObject *object, GAsyncResult *res, gpointer user_data)
                 &error);
 
         if (error != NULL) {
-                g_critical (error->message);
+                g_critical ("%s", error->message);
                 g_clear_error (&error);
         }
 
@@ -111,7 +111,7 @@ on_introspection (GObject *object, GAsyncResult *res, gpointer user_data)
         g_list_free (out_names);
 
         if (error != NULL) {
-                g_critical (error->message);
+                g_critical ("%s", error->message);
                 g_clear_error (&error);
         } else {
                 g_print ("Current volume: %s\n",
@@ -147,7 +147,7 @@ int main(int argc, char *argv[])
         GUPnPContext *context = gupnp_context_new ("wlp3s0", 0, &error);
 
         if (error != NULL) {
-                g_error (error->message);
+                g_error ("%s", error->message);
         }
 
         GUPnPControlPoint *cp = gupnp_control_point_new (context, CONTENT_DIR);