added support for HTML PIs #156087 added specific tests Daniel

* HTMLparser.c: added support for HTML PIs #156087
* test/HTML/python.html result/HTML/python.html*: added specific tests
Daniel
diff --git a/globals.c b/globals.c
index feb19cc..e64461f 100644
--- a/globals.c
+++ b/globals.c
@@ -430,7 +430,7 @@
     NULL,
     xmlSAX2Characters,
     xmlSAX2IgnorableWhitespace,
-    NULL,
+    xmlSAX2ProcessingInstruction,
     xmlSAX2Comment,
     xmlParserWarning,
     xmlParserError,