Fix a warning with libc5.

 -Erik

diff --git a/libbb/vdprintf.c b/libbb/vdprintf.c
index a18291b3b4c745d6da6fd960c9ccbdebda051603..8c3e32a7ac75ad46d0b704a1e0af494290a38f25 100644 (file)
--- a/libbb/vdprintf.c
+++ b/libbb/vdprintf.c
@@ -26,6 +26,7 @@
  */
 
 #include <stdio.h>
+#include <unistd.h>
 #include "libbb.h"