[committed] Fix Ada build on HP-UX

[John David Anglin]

Committed as obvious.  Build checked on hppa2.0w-hpux11.11.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)

2009-07-01  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

	PR ada/40609
	init.c (__gnat_error_handler): Add ATTRIBUTE_UNUSED to ucontext
	argument.

Index: init.c
===================================================================
--- init.c	(revision 149145)
+++ init.c	(working copy)
@@ -441,7 +441,9 @@
 
 static void
 __gnat_error_handler
-  (int sig, siginfo_t *siginfo ATTRIBUTE_UNUSED, void *ucontext)
+  (int sig,
+   siginfo_t *siginfo ATTRIBUTE_UNUSED,
+   void *ucontext ATTRIBUTE_UNUSED)
 {
   struct Exception_Data *exception;
   const char *msg;