fixing bug 59732, simple but allocates a new error code. Daniel

* include/libxml/xmlerror.h SAX.c: fixing bug 59732, simple
  but allocates a new error code.
Daniel
diff --git a/include/libxml/xmlerror.h b/include/libxml/xmlerror.h
index 88daeff..5b43734 100644
--- a/include/libxml/xmlerror.h
+++ b/include/libxml/xmlerror.h
@@ -133,7 +133,8 @@
     XML_ERR_ENTITY_BOUNDARY, /* 90 */
     XML_ERR_INVALID_URI, /* 91 */
     XML_ERR_URI_FRAGMENT, /* 92 */
-    XML_WAR_CATALOG_PI  /* 93 */
+    XML_WAR_CATALOG_PI, /* 93 */
+    XML_ERR_NO_DTD  /* 94 */
 }xmlParserErrors;
 
 /*