More [-Wundef] warnings fixed in POSIX extension

Forgot to squash this into the other commit

diff --git a/ext/posix/posix.c b/ext/posix/posix.c
index c623b5406fa8a97d21a0d2b53679649c98abdb30..090f47a79536d587a26a1714e9ec3ae36408e001 100644 (file)
--- a/ext/posix/posix.c
+++ b/ext/posix/posix.c
@@ -40,10 +40,10 @@
 #include <errno.h>
 #include <grp.h>
 #include <pwd.h>
-#if HAVE_SYS_MKDEV_H
+#ifdef HAVE_SYS_MKDEV_H
 # include <sys/mkdev.h>
 #endif
-#if HAVE_SYS_SYSMACROS_H
+#ifdef HAVE_SYS_SYSMACROS_H
 # include <sys/sysmacros.h>
 #endif