Fix segfault when xpath_list function is applied to an invalid document.

John Gray

diff --git a/contrib/xml2/xpath.c b/contrib/xml2/xpath.c
index d3ac76b9ef5b889301e9e6e934b73d094fac31bf..c15a5bb62256774bae41d7d22c94610837a2a815 100644 (file)
--- a/contrib/xml2/xpath.c
+++ b/contrib/xml2/xpath.c
@@ -582,7 +582,10 @@ pgxml_result_to_text(xmlXPathObjectPtr res,
    text       *xpres;
 
    if (res == NULL)
+   {
+       xmlCleanupParser();
        return NULL;
+   }
    switch (res->type)
    {
        case XPATH_NODESET: