[COMMITTED PATCH] Add missing #include in spawn_faction_addopen.c

[Roland McGrath]

2014-06-26  Roland McGrath  <roland@hack.frob.com>

	* posix/spawn_faction_addopen.c: Include <stdlib.h> for free decl.

--- a/posix/spawn_faction_addopen.c
+++ b/posix/spawn_faction_addopen.c
@@ -18,6 +18,7 @@
 #include <errno.h>
 #include <spawn.h>
 #include <unistd.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "spawn_int.h"