[libxml2] xmlPreviousElementSibling mistake

[Daniel Veillard <veillard src gnome org>]

commit 2f7009086465dbf2f30d4f8f9d7a505d15297f77
Author: François Delyon <f delyon satimage fr>
Date:   Wed Feb 3 17:32:37 2010 +0100

    xmlPreviousElementSibling mistake
    
    * tree.c: xmlPreviousElementSibling it should look for preceding sibling
      never for the following ones...

 tree.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tree.c b/tree.c
index 6872209..48511e7 100644
--- a/tree.c
+++ b/tree.c
@@ -3527,7 +3527,7 @@ xmlPreviousElementSibling(xmlNodePtr node) {
     while (node != NULL) {
         if (node->type == XML_ELEMENT_NODE)
             return(node);
-        node = node->next;
+        node = node->prev;
     }
     return(NULL);
 }