$OpenBSD: patch-lib_utils_mu-utils_cc,v 1.2 2021/08/07 18:44:09 abieber Exp $

Bring vasprintf into scope

Index: lib/utils/mu-utils.cc
--- lib/utils/mu-utils.cc.orig
+++ lib/utils/mu-utils.cc
@@ -18,7 +18,6 @@
 */
 
 
-#define _XOPEN_SOURCE
 #include <time.h>
 
 #define GNU_SOURCE
