Fix header inclusion for openpty()

AC_CHECK_HEADERS(foo.h) defines HAVE_FOO_H, not HAS_FOO_H.
This fixes a compiler warning:
xconsole.c:839: warning: implicit declaration of function 'openpty'

1 files changed, 2 insertions, 2 deletions

diff --git a/xconsole.c b/xconsole.c
index ec7ccea..4ac3870 100644
--- a/xconsole.c
+++ b/xconsole.c
@@ -66,10 +66,10 @@ extern char *_XawTextGetSTRING(TextWidget ctx, XawTextPosition left,
 #include <ctype.h>
 #include <stdlib.h>
 #ifdef HAS_OPENPTY
-# ifdef HAS_UTIL_H
+# ifdef HAVE_UTIL_H
 #  include <util.h>
 # endif
-# ifdef HAS_PTY_H
+# ifdef HAVE_PTY_H
 #  include <pty.h>
 # endif
 #endif