$NetBSD: patch-configure,v 1.2 2024/08/23 17:48:50 adam Exp $

Fixes:
    
conftest.c:124:33: error: implicitly declaring library function 'exit'
with type 'void (int) __attribute__((noreturn))'

From fedora.

--- configure.orig	2024-07-29 08:43:16.000000000 +0000
+++ configure
@@ -19572,6 +19572,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 $as_echo_n "checking if ctime_r need special care to act posixly correct... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
+#include <stdlib.h>
 #include <time.h>
 int
 main ()
@@ -19585,6 +19586,7 @@ if ac_fn_c_try_link "$LINENO"; then :
    CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
+#include <stdlib.h>
 #include <time.h>
 int
 main ()