apply simple patch from Carlo Bramini to avoid compilation problems with

* xmlmodule.c: apply simple patch from Carlo Bramini to avoid
  compilation problems with Mingw32
Daniel

svn path=/trunk/; revision=3689
diff --git a/xmlmodule.c b/xmlmodule.c
index 15bcf07..9ffd610 100644
--- a/xmlmodule.c
+++ b/xmlmodule.c
@@ -190,7 +190,7 @@
     return (0);
 }
 
-#ifdef HAVE_DLOPEN
+#if defined(HAVE_DLOPEN) && !defined(_WIN32)
 #ifdef HAVE_DLFCN_H
 #include <dlfcn.h>
 #endif