__register_binfmt() made void

Just don't pass NULL to it - nobody does, anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/alpha/kernel/binfmt_loader.c b/arch/alpha/kernel/binfmt_loader.c
index 3fcfad4..d1f474d 100644
--- a/arch/alpha/kernel/binfmt_loader.c
+++ b/arch/alpha/kernel/binfmt_loader.c
@@ -46,6 +46,7 @@
 
 static int __init init_loader_binfmt(void)
 {
-	return insert_binfmt(&loader_format);
+	insert_binfmt(&loader_format);
+	return 0;
 }
 arch_initcall(init_loader_binfmt);