openat: Fix warning.

[pspp] / lib / openat-proc.c

diff --git a/lib/openat-proc.c b/lib/openat-proc.c
index 483201ce59a1b019cd11992e41d17f3e9771ae30..b23c3fd5bd8448c52042678812bc6e95b37f11fa 100644 (file)
--- a/lib/openat-proc.c
+++ b/lib/openat-proc.c
@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "dirname.h"
 #include "intprops.h"