src: check return value, silence coverity warning

PR-URL: #26997
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

Author: bnoordhuis

src/handle_wrap.cc

@@ -79,8 +79,7 @@ void HandleWrap::Close(Local<Value> close_callback) {
   if (!close_callback.IsEmpty() && close_callback->IsFunction()) {
     object()->Set(env()->context(),
                   env()->handle_onclose_symbol(),
-                  close_callback)
-        .FromMaybe(false);
+                  close_callback).Check();
   }
 }