win clang: don't disable -Wself-assign

third_party/libxml/src/xmlschemas.c

 /*
  * schemas.c : implementation of the XML Schema handling and
  *             schema validity checking
  *
  * See Copyright for the status of this software.
  *
  * Daniel Veillard <veillard@redhat.com>
  */
 
 /*
@@ skipping 24183 matching lines @@
     if ((tmpType->builtInType == XML_SCHEMAS_STRING) ||
         WXS_IS_ANY_SIMPLE_TYPE(tmpType)) {
         ws = xmlSchemaGetWhiteSpaceFacetValue(type);
     } else
         ws = XML_SCHEMA_WHITESPACE_COLLAPSE;
     /*
     * If the value was not computed (for string or
     * anySimpleType based types), then use the provided
     * type.
     */
-    if (val == NULL)
-        valType = valType;
-    else
+    if (val != NULL)
         valType = xmlSchemaGetValType(val);
 
     ret = 0;
     for (facetLink = type->facetSet; facetLink != NULL;
         facetLink = facetLink->next) {
         /*
         * Skip the pattern "whiteSpace": it is used to
         * format the character content beforehand.
         */
         switch (facetLink->facet->type) {
@@ skipping 4681 matching lines @@
 xmlSchemaValidCtxtGetParserCtxt(xmlSchemaValidCtxtPtr ctxt)
 {
     if (ctxt == NULL)
         return(NULL);
     return (ctxt->parserCtxt);
 }
 
 #define bottom_xmlschemas
 #include "elfgcchack.h"
 #endif /* LIBXML_SCHEMAS_ENABLED */