Bugfix: Fixes #299, Unable to compile desktop package

shared/comgtk/public/shorthand.h

@@ -24,6 +24,18 @@
  */
 #define WINTC_UNUSED(arg) __attribute__((unused)) arg
 
+/**
+ * @def WINTC_DEBUG_ONLY(arg)
+ *
+ * Marks a parameter as only used in chcked builds, so the compiler does not
+ * complain for free builds.
+ */
+#ifdef WINTC_CHECKED
+#define WINTC_DEBUG_ONLY(arg) arg
+#else
+#define WINTC_DEBUG_ONLY(arg) WINTC_UNUSED(arg)
+#endif
+
 /**
  * @def WINTC_RETURN_IF_FAIL(cond)
  *

shell/desktop/src/settings.c

@@ -257,7 +257,7 @@ static void wintc_desktop_settings_set_wallpaper_path(
 //
 static void regkey_changed_desktop_cb(
     WINTC_UNUSED(WinTCRegistry* registry),
-    const gchar* key_path,
+    WINTC_DEBUG_ONLY(const gchar* key_path),
     const gchar* value_name,
     GVariant*    value_variant,
     WINTC_UNUSED(gpointer user_data)