[libxml2] Another attempt at improving fuzzer stability

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 7a90bdfae62732b1fc4ff28d874cb1c51d299c0a
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Mon Feb 22 17:58:06 2021 +0100

    Another attempt at improving fuzzer stability
    
    xmlInitializeCatalog is not called from xmlInitParser.

 fuzz/html.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/fuzz/html.c b/fuzz/html.c
index 449a9d49..b53c4025 100644
--- a/fuzz/html.c
+++ b/fuzz/html.c
@@ -6,12 +6,14 @@
 
 #include <libxml/HTMLparser.h>
 #include <libxml/HTMLtree.h>
+#include <libxml/catalog.h>
 #include "fuzz.h"
 
 int
 LLVMFuzzerInitialize(int *argc ATTRIBUTE_UNUSED,
                      char ***argv ATTRIBUTE_UNUSED) {
     xmlInitParser();
+    xmlInitializeCatalog();
     xmlSetGenericErrorFunc(NULL, xmlFuzzErrorFunc);
 
     return 0;