cleanup, error pages

src/linux_fastcgi.cpp

@@ -112,6 +112,10 @@ bool render_wasm_error_page(Request& request, String config_key, s32 status_code
 		request.call.remove("error");
 		return(false);
 	}
+	// Rendering the error-page unit set the response to its own (200) status;
+	// re-assert the error status + html content-type so the client sees e.g. 500.
+	request.set_status(status_code, status_reason);
+	request.header["Content-Type"] = first(request.server->config["CONTENT_TYPE"], "text/html; charset=utf-8");
 	print(html);
 	return(true);
 }