xml2: Use WINAPIV calling convention for variadic functions.

libs/xml2/globals.c

@@ -827,7 +827,7 @@ int xmlThrDefDoValidityCheckingDefaultValue(int v) {
 }
 
 #undef	xmlGenericError
-xmlGenericErrorFunc *
+xmlGenericErrorFunc * XMLCALL
 __xmlGenericError(void) {
     if (IS_MAIN_THREAD)
 	return (&xmlGenericError);

libs/xml2/include/libxml/xmlerror.h

@@ -916,7 +916,7 @@ XMLPUBFUN int XMLCALL
 /*
  * Internal callback reporting routine
  */
-XMLPUBFUN void XMLCALL
+XMLPUBFUN void XMLCDECL
     __xmlRaiseError		(xmlStructuredErrorFunc schannel,
 				 xmlGenericErrorFunc channel,
 				 void *data,

libs/xml2/include/libxml/xmlexports.h

@@ -26,7 +26,7 @@
 #else
   #define XMLCALL __cdecl
 #endif
-#define XMLCDECL __cdecl
+#define XMLCDECL WINAPIV
 
 /** DOC_ENABLE */
 #else /* not Windows */

libs/xml2/include/libxml/xmlstring.h

@@ -94,7 +94,7 @@ XMLPUBFUN xmlChar * XMLCALL
                 xmlStrncatNew            (const xmlChar *str1,
                                          const xmlChar *str2,
                                          int len);
-XMLPUBFUN int XMLCALL
+XMLPUBFUN int XMLCDECL
                 xmlStrPrintf             (xmlChar *buf,
                                          int len,
                                          const char *msg,