scd: Add <unistd.h> for read(2) / write(2) .

* scd/app.c: Include <unistd.h>.

--

Reported-by: David Bohman
GnuPG-bug-id: 7193
Signed-off-by: NIIBE Yutaka <[email protected]>
(cherry picked from commit 1d5cfa9b7fd22e1c46eeed5fa9fed2af6f81d34f)

1 files changed, 1 insertions, 0 deletions

diff --git a/scd/app.c b/scd/app.c
index 21230bd30..c6bfd3f51 100644
--- a/scd/app.c
+++ b/scd/app.c
@@ -22,6 +22,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <npth.h>
 
 #ifndef HAVE_W32_SYSTEM