--- libxml2-2.9.12/nanohttp.c	2020-07-17 17:18:23.000000000 +0200
+++ libxml2-2.9.12-patched/nanohttp.c	2021-06-04 14:56:42.336021798 +0200
@@ -121,6 +121,10 @@
 #define XML_NANO_HTTP_READ	2
 #define XML_NANO_HTTP_NONE	4
 
+#ifndef ESHUTDOWN
+#define ESHUTDOWN ENOTCONN
+#endif
+
 typedef struct xmlNanoHTTPCtxt {
     char *protocol;	/* the protocol name */
     char *hostname;	/* the host name */