Fix cb_widget_configured signature: return false

zathura/callbacks.c

@@ -256,15 +256,17 @@ cb_widget_screen_changed(GtkWidget* widget, GdkScreen* previous_screen, gpointer
   zathura_update_view_ppi(zathura);
 }
 
-void
+gboolean
 cb_widget_configured(GtkWidget* UNUSED(widget), GdkEvent* UNUSED(event), gpointer data)
 {
   zathura_t* zathura = data;
   if (zathura == NULL) {
-    return;
+    return false;
   }
 
   zathura_update_view_ppi(zathura);
+
+  return false;
 }
 
 void

zathura/callbacks.h

@@ -116,8 +116,9 @@ void cb_widget_screen_changed(GtkWidget* widget, GdkScreen* previous_screen, gpo
  * @param widget The main window widget
  * @param event The configure event
  * @param gpointer The zathura instance
+ * @return true if no error occurred and the event has been handled
  */
-void cb_widget_configured(GtkWidget* widget, GdkEvent* event, gpointer data);
+gboolean cb_widget_configured(GtkWidget* widget, GdkEvent* event, gpointer data);
 
 /**
  * This function gets called when the view widget scale factor changes (e.g.