From: Andreas Beckmann <anbe@debian.org>
Date: Fri, 28 Jun 2024 09:01:17 +0200
Subject: fix building with -Werror=implicit-function-declaration

---
 lacheck.lex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lacheck.lex b/lacheck.lex
index 5fc31ec..f13acc3 100644
--- a/lacheck.lex
+++ b/lacheck.lex
@@ -117,6 +117,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 /* #include <sys/param.h> */
 
 /* extern char *realloc(); */