parser: Don't call *DefaultSAXHandlerInit from xmlInitParser

Change the default handler definitions to match the result after calling
the initialization functions.

This makes sure that no thread-local variables are accessed when calling
xmlInitParser.

parser.c

@@ -14498,14 +14498,12 @@ xmlInitParser(void) {
 	xmlInitMemory();
         xmlInitializeDict();
 	xmlInitCharEncodingHandlers();
-	xmlDefaultSAXHandlerInit();
 	xmlRegisterDefaultInputCallbacks();
 #ifdef LIBXML_OUTPUT_ENABLED
 	xmlRegisterDefaultOutputCallbacks();
 #endif /* LIBXML_OUTPUT_ENABLED */
 #ifdef LIBXML_HTML_ENABLED
 	htmlInitAutoClose();
-	htmlDefaultSAXHandlerInit();
 #endif
 #if defined(LIBXML_XPATH_ENABLED) || defined(LIBXML_SCHEMAS_ENABLED)
 	xmlXPathInit();