[epiphany/pgriffis/web-extension-gtask] WebExtensions: Mark unused variable

[Patrick Griffis <pgriffis src gnome org>]

commit 446c8163c1197948ec29565a03ff94d166b54e27
Author: Patrick Griffis <pgriffis igalia com>
Date:   Thu May 26 14:42:34 2022 -0500

    WebExtensions: Mark unused variable

 embed/web-process-extension/ephy-webextension-api.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/embed/web-process-extension/ephy-webextension-api.c 
b/embed/web-process-extension/ephy-webextension-api.c
index 31f11f767..7deea4062 100644
--- a/embed/web-process-extension/ephy-webextension-api.c
+++ b/embed/web-process-extension/ephy-webextension-api.c
@@ -208,6 +208,8 @@ on_ephy_message_finish (EphyWebExtensionExtension *extension,
     value = jsc_value_new_from_json (context, json);
     ret = jsc_value_function_call (message_data->resolve_callback, JSC_TYPE_VALUE, value, G_TYPE_NONE);
   }
+
+  (void)ret;
 }
 
 static void