remove const

staef.c

@@ -384,6 +384,7 @@ QJSCLASS(font,)
 JSC_CCALL(staef_font_new,
   size_t len;
   void *data = js_get_blob_data(js, &len, argv[0]);
+  if (data == -1) return JS_EXCEPTION;
   if (!data) return JS_ThrowReferenceError(js, "could not get array buffer data");
   
   double height = js2number(js, argv[1]);