[endgrent]: Test !HAVE_ENDGRENT rather than _POSIX_SOURCE.

diff --git a/src/chgrp.c b/src/chgrp.c
index 0ee2b7297bf394e1ac0b218d73323902dd0be61f..24ac34be4d9b200f60bfe119b613179e4ff85aec 100644 (file)
--- a/src/chgrp.c
+++ b/src/chgrp.c
@@ -44,8 +44,8 @@
 struct group *getgrnam ();
 #endif
 
-#ifdef _POSIX_VERSION
-#define endgrent()
+#ifndef HAVE_ENDGRENT
+# define endgrent() ((void) 0)
 #endif
 
 char *group_member ();