Patch from Russell King <rmk@arm.linux.org.uk>

Have a couple of extra warnings:

fs/binfmt_elf.c: In function `create_elf_tables':
fs/binfmt_elf.c:239: warning: initialization makes integer from pointer without a cast
fs/binfmt_elf.c:249: warning: initialization makes integer from pointer without a cast

#ifndef elf_addr_t
#define elf_addr_t unsigned long
#endif

        elf_addr_t *argv, *envp;

        __put_user(NULL, argv);
        __put_user(NULL, envp);

It would therefore appear that x86 __put_user is not properly type-checking
the arguments to __put_user().

Here's a patch which fixes the warning (but doesn't fix x86's type-check
challenged __put_user implementation).