[libxslt] Call xmlNodeGetSpacePreserve with element node

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 7cb08dacadf7e1cf88ee2f45815251b61bffcde6
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Fri Feb 14 17:18:53 2014 +0100

    Call xmlNodeGetSpacePreserve with element node
    
    Since libxml2 version 2.9.0, xmlNodeGetSpacePreserve checks that the
    argument is an element node:
    
    https://git.gnome.org/browse/libxml2/commit/?id=3e62adbe39f2083c9c2cd3330c320227818fd361

 libxslt/xslt.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libxslt/xslt.c b/libxslt/xslt.c
index 58d1386..972a38e 100644
--- a/libxslt/xslt.c
+++ b/libxslt/xslt.c
@@ -3553,7 +3553,7 @@ xsltPrecomputeStylesheet(xsltStylesheetPtr style, xmlNodePtr cur)
            }
        } else if (cur->type == XML_TEXT_NODE) {
            if (IS_BLANK_NODE(cur)) {
-               if (xmlNodeGetSpacePreserve(cur) != 1) {
+               if (xmlNodeGetSpacePreserve(cur->parent) != 1) {
                    deleteNode = cur;
                }
            } else if ((cur->content != NULL) && (internalize) &&