Get rid of a shadow warning

libpthread/linuxthreads.old/internals.h

@@ -490,11 +490,11 @@ extern void __pthread_kill_other_threads_np __P ((void));
 
 extern void __pthread_restart_old(pthread_descr th);
 extern void __pthread_suspend_old(pthread_descr self);
-extern int __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abs);
+extern int __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime);
 
 extern void __pthread_restart_new(pthread_descr th);
 extern void __pthread_suspend_new(pthread_descr self);
-extern int __pthread_timedsuspend_new(pthread_descr self, const struct timespec *abs);
+extern int __pthread_timedsuspend_new(pthread_descr self, const struct timespec *abstime);
 
 extern void __pthread_wait_for_restart_signal(pthread_descr self);