Upgrade to libxml 2.9.2 and libxslt 1.1.28

third_party/libxslt/libexslt/common.c

 #define IN_LIBEXSLT
 #include "libexslt/libexslt.h"
 
 #if defined(WIN32) && !defined (__CYGWIN__) && (!__MINGW32__)
 #include <win32config.h>
 #else
 #include "config.h"
 #endif
 
 #include <libxml/tree.h>
@@ skipping 28 matching lines @@
         /*
         * SPEC EXSLT:
         * "You can also use this function to turn a string into a text
         * node, which is helpful if you want to pass a string to a
         * function that only accepts a node-set."
         */
         fragment = xsltCreateRVT(tctxt);
         if (fragment == NULL) {
             xsltTransformError(tctxt, NULL, tctxt->inst,
                 "exsltNodeSetFunction: Failed to create a tree fragment.\n");
-            tctxt->state = XSLT_STATE_STOPPED; 
+            tctxt->state = XSLT_STATE_STOPPED;
             return;
         }
         xsltRegisterLocalRVT(tctxt, fragment);
 
         strval = xmlXPathPopString (ctxt);
-        
+
         txt = xmlNewDocText (fragment, strval);
         xmlAddChild((xmlNodePtr) fragment, txt);
-        obj = xmlXPathNewNodeSet(txt);  
+        obj = xmlXPathNewNodeSet(txt);
         if (obj == NULL) {
             xsltTransformError(tctxt, NULL, tctxt->inst,
                 "exsltNodeSetFunction: Failed to create a node set object.\n");
             tctxt->state = XSLT_STATE_STOPPED;
         } else {
             /*
              * Mark it as a function result in order to avoid garbage
              * collecting of tree fragments
              */
             xsltExtensionInstructionResultRegister(tctxt, obj);
         }
         if (strval != NULL)
             xmlFree (strval);
-        
+
         valuePush (ctxt, obj);
     }
 }
 
 static void
 exsltObjectTypeFunction (xmlXPathParserContextPtr ctxt, int nargs) {
     xmlXPathObjectPtr obj, ret;
 
     if (nargs != 1) {
         xmlXPathSetArityError(ctxt);
@@ skipping 45 matching lines @@
                                   EXSLT_COMMON_NAMESPACE,
                                   exsltNodeSetFunction);
     xsltRegisterExtModuleFunction((const xmlChar *) "object-type",
                                   EXSLT_COMMON_NAMESPACE,
                                   exsltObjectTypeFunction);
     xsltRegisterExtModuleElement((const xmlChar *) "document",
                                  EXSLT_COMMON_NAMESPACE,
                                  (xsltPreComputeFunction) xsltDocumentComp,
                                  (xsltTransformFunction) xsltDocumentElem);
 }