Merge a libxml clang warning fix

third_party/libxml/src/xpath.c

 /*
  * xpath.c: XML Path Language implementation
  *          XPath is a language for addressing parts of an XML document,
  *          designed to be used by both XSLT and XPointer
  *f
  * Reference: W3C Recommendation 16 November 1999
  *     http://www.w3.org/TR/1999/REC-xpath-19991116
  * Public reference:
  *     http://www.w3.org/TR/xpath
  *
@@ skipping 12248 matching lines @@
                             case XML_COMMENT_NODE:
                             case XML_CDATA_SECTION_NODE:
                             case XML_TEXT_NODE:
                             case XML_NAMESPACE_DECL:
                                 XP_TEST_HIT
                                 break;
                             default:
                                 break;
                         }
                     } else if (cur->type == type) {
-                        if (type == XML_NAMESPACE_DECL)
+                        if (cur->type == XML_NAMESPACE_DECL)
                             XP_TEST_HIT_NS
                         else
                             XP_TEST_HIT
                     } else if ((type == NODE_TYPE_TEXT) &&
                          (cur->type == XML_CDATA_SECTION_NODE))
                     {
                         XP_TEST_HIT
                     }
                     break;
                 case NODE_TEST_PI:
@@ skipping 2868 matching lines @@
                          xmlXPathTranslateFunction);
 
     xmlXPathRegisterFuncNS(ctxt, (const xmlChar *)"escape-uri",
          (const xmlChar *)"http://www.w3.org/2002/08/xquery-functions",
                          xmlXPathEscapeUriFunction);
 }
 
 #endif /* LIBXML_XPATH_ENABLED */
 #define bottom_xpath
 #include "elfgcchack.h"