[PATCH v1] binfmt: check return value of remove_arg_zero

[Olaf Hering]

In preparation to build with -Werror=unused-result, use remove_arg_zero 
properly.

Fixes commit b6a2fea39318e43fee84fa7b0b90d68bed92d2ba

Signed-off-by: Olaf Hering <o...@aepfle.de>
---
 fs/binfmt_em86.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/binfmt_em86.c b/fs/binfmt_em86.c
index 06b9b9fddf70..5b1c02a0250f 100644
--- a/fs/binfmt_em86.c
+++ b/fs/binfmt_em86.c
@@ -63,7 +63,8 @@ static int load_em86(struct linux_binprm *bprm)
         * This is done in reverse order, because of how the
         * user environment and arguments are stored.
         */
-       remove_arg_zero(bprm);
+       retval = remove_arg_zero(bprm);
+       if (retval < 0) return retval; 
        retval = copy_string_kernel(bprm->filename, bprm);
        if (retval < 0) return retval; 
        bprm->argc++;