Change to just include <utmpx.h> over <utmp.h>

Including deprecated <utmp.h> over standard <utmpx.h> may
cause unwanted side effects, for example, enables old-code-compatibility
functions and override utmpx functions.

Signed-off-by: OBATA Akio <obache@wizdas.com>
(cherry picked from commit 2c18879814)

ktalkd/ktalkd/includ.h

@@ -55,11 +55,10 @@
 #define NEW_CTL_RESPONSE CTL_RESPONSE
 #include "otalkd.h"
 
-#ifdef HAVE_UTMP_H
-#include <utmp.h>
-#endif
 #ifdef HAVE_UTMPX_H
 #include <utmpx.h>
+#elif defined HAVE_UTMP_H
+#include <utmp.h>
 #endif
 #ifndef UT_LINESIZE
 #define UT_LINESIZE 12