File uses implicit declaration of a library function. This is not allow with clang16s default settings.

Bug: https://bugs.gentoo.org/882175
Patch has been sent to upstream via mail

#  Pascal Jäger <pascal.jaeger@leimstift.de> (2023-09-18)

--- a/astime_x.c
+++ b/astime_x.c
@@ -11,6 +11,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <math.h>
 #include <time.h>