apply fixes to close #63271 and avoid segfaults when the error routine

* parser.c globals.c DOCBparser.c HTMLparser.c error.c:
  apply fixes to close #63271 and avoid segfaults when
  the error routine gets callbed before xmlInitParser()
  get called.
* nanoftp.c error.c: Applied patches from Justin Fletcher
  correcting some xmlGenericError misuses.
Daniel

parser.c

@@ -9791,6 +9791,8 @@ xmlSAXParseFileWithData(xmlSAXHandlerPtr sax, const char *filename,
     xmlParserCtxtPtr ctxt;
     char *directory = NULL;
 
+    xmlInitParser();
+
     ctxt = xmlCreateFileParserCtxt(filename);
     if (ctxt == NULL) {
 	return(NULL);