[libxml2] Fix a failure to report xmlreader parsing failures

[Daniel Veillard <veillard src gnome org>]

commit c508fa3f0b40ba232e00ed8d514e0ba37ed602ab
Author: Daniel Veillard <veillard redhat com>
Date:   Wed Jul 18 17:39:56 2012 +0800

    Fix a failure to report xmlreader parsing failures
    
    Related to https://bugzilla.gnome.org/show_bug.cgi?id=654567
    the problem is that the provided patch failed to raise an error
    on xmlTextReaderRead() return when an actual parsing error occured

 xmlreader.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/xmlreader.c b/xmlreader.c
index 77ac71b..10417ee 100644
--- a/xmlreader.c
+++ b/xmlreader.c
@@ -907,8 +907,11 @@ xmlTextReaderPushData(xmlTextReaderPtr reader) {
 	}
     }
     reader->state = oldstate;
-    if (reader->ctxt->wellFormed == 0)
+    if (reader->ctxt->wellFormed == 0) {
 	reader->mode = XML_TEXTREADER_MODE_EOF;
+        return(-1);
+    }
+
     return(0);
 }