[commit/regression] Fix remote-sim.c regression on PPC64

[Sergio Durigan Junior <sergiodj@redhat.com>]

Hello,

Thanks to Edjunior this regression came to my notice on PPC64
(coincidentally I was also running some tests on a similiar machine).
The regression was introduced by Tom's commit:

    http://sourceware.org/ml/gdb-cvs/2012-08/msg00160.html

The fix was easy: pass NULL as the first argument of
`register_inferior_data_with_cleanup'.

Here is the commit.

-- 
Sergio

Index: gdb/ChangeLog
===================================================================
RCS file: /cvs/src/src/gdb/ChangeLog,v
retrieving revision 1.14622
diff -u -p -r1.14622 ChangeLog
--- gdb/ChangeLog	22 Aug 2012 21:04:52 -0000	1.14622
+++ gdb/ChangeLog	22 Aug 2012 21:30:16 -0000
@@ -1,3 +1,8 @@
+2012-08-22  Sergio Durigan Junior  <sergiodj@redhat.com>
+
+	* remote-sim.c (_initialize_remote_sim): Pass NULL argument to
+	`register_inferior_data_with_cleanup', fixing regression on PowerPC64.
+
 2012-08-22  Khoo Yit Phang <khooyp@cs.umd.edu>
 
 	Enable readline in Python in a GDB-specific way and block the
Index: gdb/remote-sim.c
===================================================================
RCS file: /cvs/src/src/gdb/remote-sim.c,v
retrieving revision 1.112
diff -u -p -r1.112 remote-sim.c
--- gdb/remote-sim.c	22 Aug 2012 17:48:52 -0000	1.112
+++ gdb/remote-sim.c	22 Aug 2012 21:30:16 -0000
@@ -1322,5 +1322,5 @@ _initialize_remote_sim (void)
   set_cmd_completer (c, sim_command_completer);
 
   sim_inferior_data_key
-    = register_inferior_data_with_cleanup (sim_inferior_data_cleanup);
+    = register_inferior_data_with_cleanup (NULL, sim_inferior_data_cleanup);
 }