fixed a backward compatibility problem when formatting "deprecated SAXv1

* parserInternals.c: fixed a backward compatibility problem
  when formatting "deprecated SAXv1 function ignorableWhitespace"
  could be reproduced by xmllint --format
Daniel
diff --git a/parserInternals.c b/parserInternals.c
index 5a9c8e0..c2d88f7 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -2320,7 +2320,7 @@
     ctxt->linenumbers = xmlLineNumbersDefaultValue;
     ctxt->keepBlanks = xmlKeepBlanksDefaultValue;
     if (ctxt->keepBlanks == 0)
-	ctxt->sax->ignorableWhitespace = ignorableWhitespace;
+	ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
 
     ctxt->vctxt.userData = ctxt;
     ctxt->vctxt.error = xmlParserValidityError;
@@ -2687,7 +2687,7 @@
  * Set and return the previous value for default blanks text nodes support.
  * The 1.x version of the parser used an heuristic to try to detect
  * ignorable white spaces. As a result the SAX callback was generating
- * ignorableWhitespace() callbacks instead of characters() one, and when
+ * xmlSAX2IgnorableWhitespace() callbacks instead of characters() one, and when
  * using the DOM output text nodes containing those blanks were not generated.
  * The 2.x and later version will switch to the XML standard way and
  * ignorableWhitespace() are only generated when running the parser in