Tried to close bug #60131 Daniel

* libxml.h include/libxml/xmlversion.h.in
  include/libxml/xmlwin32version.h include/libxml/xmlwin32version.h.in:
  Tried to close bug #60131
Daniel
diff --git a/libxml.h b/libxml.h
index c8f7676..aaebf3b 100644
--- a/libxml.h
+++ b/libxml.h
@@ -16,7 +16,7 @@
 #include <libxml/xmlversion.h>
 #endif
 
-#ifdef WITHOUT_TRIO
+#ifndef WITH_TRIO
 #include <stdio.h>
 #else
 /**