ngx_resolve_name() frees ctx on immediate failure

src/http/ngx_http_upstream.c

diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 2412779..7041514 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -422,13 +422,13 @@
         ctx->data = r;
         ctx->timeout = clcf->resolver_timeout;
 
-        u->resolved->ctx = ctx;
-
         if (ngx_resolve_name(ctx) != NGX_OK) {
             ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
             return;
         }
 
+        u->resolved->ctx = ctx;
+
         return;
     }