Fix wxHTML benchmarks compilation

wx/crt.h must be included to use wxSscanf().

tests/benchmarks/htmlparser/htmlpars.cpp

@@ -21,6 +21,7 @@
     #include "wx/app.h"
 #endif
 
+#include "wx/crt.h"
 #include "wx/tokenzr.h"
 #include "wx/wfstream.h"
 #include "wx/url.h"

tests/benchmarks/htmlparser/htmltag.cpp

@@ -15,9 +15,8 @@
 #include "htmltag.h"
 
 #include "htmlpars.h"
-#include <stdio.h> // for vsscanf
-#include <stdarg.h>
 
+#include "wx/crt.h"
 
 //-----------------------------------------------------------------------------
 // wx28HtmlTagsCache