[PATCH] uml: include stddef.h correctly

We were not including stddef.h in files that used offsetof.

One file was also including linux/stddef.h for no perciptible reason.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/sys-i386/ptrace_user.c

@@ -4,9 +4,9 @@
  */
 
 #include <stdio.h>
+#include <stddef.h>
 #include <errno.h>
 #include <unistd.h>
-#include <linux/stddef.h>
 #include "ptrace_user.h"
 /* Grr, asm/user.h includes asm/ptrace.h, so has to follow ptrace_user.h */
 #include <asm/user.h>