[libxml2] Fix processing in SAX2 in case of an allocation failure

[Daniel Veillard <veillard src gnome org>]

commit a6ea72ad192f4209b5073e39358ce15f3f1dca4b
Author: Daniel Veillard <veillard redhat com>
Date:   Mon Jul 14 20:29:34 2014 +0800

    Fix processing in SAX2 in case of an allocation failure
    
    Related to https://bugzilla.gnome.org/show_bug.cgi?id=731360

 SAX2.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/SAX2.c b/SAX2.c
index e616efe..ffef3e1 100644
--- a/SAX2.c
+++ b/SAX2.c
@@ -2580,6 +2580,7 @@ xmlSAX2Characters(void *ctx, const xmlChar *ch, int len)
            }
            if (lastChild->content == NULL) {
                xmlSAX2ErrMemory(ctxt, "xmlSAX2Characters: xmlStrdup returned NULL");
+               return;
            }
             if (((size_t)ctxt->nodelen + (size_t)len > XML_MAX_TEXT_LENGTH) &&
                 ((ctxt->options & XML_PARSE_HUGE) == 0)) {